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Home > Recipes > Meal type > Savoury Snacks
zucchini slice in white baking dish topped with cherry tomatoes

Gluten Free Zucchini Slice Recipe – Dairy Free

  • DF
  • GF
  • NF

5 from 3 votes
Prep Time 15 minutes mins
Cook Time 45 minutes mins
Total Time 1 hour hr
A delicious gluten free zucchini slice recipe that is excellent served warm or cold in lunchboxes. This recipe contains bacon but can be made vegetarian.
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9 September 2021
August 26, 2025

by

Sarah Bell

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This gluten free zucchini slice recipe can be a healthy, protein filled snack, quick lunch or light dinner. This healthy savory snack can be served warm straight from the oven or cold in work and school lunches. Or pack into a picnic basket for a nice picnic lunch! This zucchini and carrot slice is a great way to sneak some extra vegetables into the kids!

Scene of healthy gluten free zucchini slice on white ceramic plate, white wine in brown glass, cutlery and linen.
Contents:
  1. Why You Will Love This Recipe
  2. INGREDIENTS FOR GLUTEN FREE ZUCCHINI SLICE
  3. Equipment
  4. Method
  5. Cooking Tips
  6. Substitutions and Variations
  7. Substitutions and Variations
  8. Storage
  9. Other Recipes You Might Like
  10. Pin For Later
  11. Gluten Free Zucchini Slice – Dairy Free

Most zucchini slice recipes are based on wheat flour and loaded with cheese, which is completely fine if you can tolerate those foods. If not, then this recipe is for you as it is gluten free and dairy free!

Why You Will Love This Recipe

  • This bacon slice is prepared in just one bowl (minimal washing up)!
  • Only 15 minutes preparation time.
  • This slice makes for an easy, healthy snack, perfect for lunch boxes.
  • No need to squeeze out excess moisture from the zucchini like many other recipes.

INGREDIENTS FOR GLUTEN FREE ZUCCHINI SLICE

The ingredients for this simple recipe Mare available from most grocery stores. ost zucchini slice recipes are based on wheat flour and loaded with cheese. To make this more gut friendly Zucchini Slice you will need:

  • medium zucchini
  • carrot
  • brown onion
  • spring onions (shallots)
  • free range eggs – I always opt for free range and organic if possible.
  • extra virgin olive oil – always use extra virgin as it is much less processed & more nutrient dense.
  • buckwheat flour – high in B vitamins and an excellent gluten free flour to use in place of wheat flour.
  • baking powder – I opt for a gluten free and aluminium free baking powder.
  • arrowroot flour – tapioca starch or corn flour can be used if arrowroot flour can’t be sourced.
  • sea salt & cracked black pepper

OPTIONAL EXTRAS

  • bacon – if you are a coeliac, make sure the bacon you choose is gluten free.
  • cherry tomatoes – I love the tang that the cherry tomatoes add, but my kids don’t like them as much. It’s totally up to you if you add them or not!
  • grated tasty cheese – if not needing recipe to be dairy free.

See ingredient quantities in the recipe card.

ingredients needed for zucchini slice
cherry tomatoes, halved, in a small dish
bacon rashers in a plastic bag on a light grey backdrop

Equipment

  • one large bowl
  • box grater or food processor with grater attachment
  • chopping board
  • sharp knife
  • fork
  • porcelain roaster / ceramic baking dish
  • Measuring Cups and Spoons

Method

One of my favourite things about this recipe is that it requires just one bowl! Which means less cleaning up, win! Here’s how to make this yummy, gluten free zucchini slice recipe.

STEP 1: Add ingredients to bowl. Add the grated zucchini, carrot and brown onion to a bowl along with the spring onions, eggs, olive oil, salt and pepper. Sieve the buckwheat flour and baking powder into the bowl. Use a fork to mix the ingredients together until well combined.

Add the eggs,
extra virgin olive oil,
ingredients for gluten free zucchini slice in a bowl
grated zucchini, finely grated carrot, grated onion and shallots to a bowl.
hands mixing mixture in bowl with a fork
Sieve the buckwheat flour, arrowroot flour and baking powder into the bowl and add the salt & pepper. Whisk to combine.

STEP 2: Add bacon. Add the thinly sliced bacon to the bowl and stir to combine.

STEP 3: Pour mixture into baking dish. Pour the zucchini slice mixture into a large, greased baking dish and top with cherry tomatoes. Bake for approximately 45 minutes at 180 degrees Celsius (356 Fahrenheit). The baking time will depend on the size of your baking dish – I have used a 35×24 cm casserole dish / baking dish (as pictured) which makes a thinner slice and therefore a shorter cooking time. Using a smaller baking dish will result in a thicker slice and a slightly longer baking time. You will know when the slice is baked as it will be slightly golden on top and will spring back when gently pushed down in the centre.

zucchini slice mixture in ceramic bowl with bacon pieces
If adding bacon, add to the bowl and stir through.
zucchini slice in white baking dish topped with cherry tomatoes
Pour the zucchini slice mixture into a large, greased baking dish and top with cherry tomatoes. Bake for 45 minutes at 180 degrees Celsius.

STEP 4: Serve. Slice into desired sized slices and serve warm or cold.

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Cooking Tips

Here are some tips for making the best zucchini slice:

  • make sure to grate the carrot on the fine side of the grater. This helps the carrot to almost dissolve into the mixture as it bakes.
  • grate the zucchini on the course side of the grater – zucchini shrinks a lot as it cooks in this slice and still gives a nice texture to the slice when coarsely grated. Plus it helps it to stand out a bit more – this is a zucchini slice after all!
  • grating the onion instead of slicing into small pieces means that you don’t get chunks of undercooked onion throughout the slice. It also gives the slice a really lovely consistency and extra flavour.
  • Sieve the baking powder because nobody like lumps of baking powder in their zucchini slice!
  • The actual type of dish that you use to bake this slice isn’t overly important, if you only have a baking tray or slice tray that is fine – it just needs to be around 5cm deep with a minimum capacity 2.2l.

Substitutions and Variations

The best thing about this slice is how flexible it can be. Here are some substitutions that can be made.

  • Vegetarian option – leave out the bacon.
  • Flourless zucchini slice – use almond flour in place of buckwheat flour. This will result in a slightly wetter slice, therefore I would recommend squeezing out excess water from zucchini if making flourless.
  • Zucchini Slice Muffins – spoon mixture into oiled muffin pan and bake for approximately 30 minutes, or until a skewer comes out clean when pushed into the center of the muffin.
  • Brown onion – use red onion instead (this will create a slightly different coloured slice).
  • Buckwheat flour – swap buckwheat flour and tapioca flour/arrowroot flour for a gluten free flour blend.

Substitutions and Variations

The best thing about this slice is how flexible it can be. Here are some substitutions that can be made.

  • Vegetarian option – leave out the bacon.
  • Flourless zucchini slice – use almond flour in place of buckwheat flour. This will result in a slightly wetter slice, therefore I would recommend squeezing out excess water from zucchini if making flourless.
  • Zucchini Slice Muffins – spoon mixture into oiled muffin pan and bake for approximately 30 minutes, or until a skewer comes out clean when pushed into the center of the muffin.
  • Brown onion – use red onion instead (this will create a slightly different coloured slice).
  • Buckwheat flour – swap buckwheat flour and tapioca flour/arrowroot flour for a gluten free flour blend.

Storage

Once the slice has reduced to room temperature, cover and refrigerate for up to 4 days. To freeze, transfer pre-cut slices to an airtight container and freeze for up to 3 months.

Other Recipes You Might Like

Did you love this gluten free zucchini slice recipe? You might like to check these out:

Vegan Corn Fritters – Gluten Free

Broccoli and Sweet Potato Fritters

Savoury Pumpkin & Zucchini Bread

scene of zucchini slice, sliced in baking dish, slices of zucchini slice on plates, wine in amber coloured glasses

Pin For Later

Don’t have time to make this right now? Create a Pinterest board called “Recipes to Make” and pin this image to it.

Gluten Free Zucchini Slice – Dairy Free

5 from 3 votes
By: Sarah Bell
A delicious gluten free zucchini slice recipe that is excellent served warm or cold in lunchboxes. This recipe contains bacon but can be made vegetarian.
zucchini slice in white baking dish topped with cherry tomatoes
print pin Leave Review
Prep Time 15 minutes mins
Cook Time 45 minutes mins
Total Time 1 hour hr
Servings: 12

Equipment

  • Large mixing bowl
  • Measuring Cups & Spoons
  • Fork
  • Large Baking Dish
  • Chopping Board
  • Sharp knife
  • Box grater or food processor with grater attachment

Ingredients

  • 6 large eggs
  • 1 large zucchini, trimmed and grated
  • 1 large carrot, trimmed and finely grated
  • 1 brown onion, peeled & grated
  • 5 stems spring onion, trimmed and finely sliced
  • ½ cup buckwheat flour
  • ½ cup arrowroot flour, or tapioca starch
  • 2 tsp baking powder, aluminium free
  • 1 tsp sea salt flakes
  • Cracked black pepper, to taste
  • 2/3 cup extra virgin olive oil
  • 100 g mixed cherry tomatoes, halved
  • 2 rashers bacon, rind removed and thinly sliced, optional
Prevent your screen from going dark

Instructions 

  1. Preheat the oven to 180 degrees Celsius. Grease a large baking dish and set aside.
  2. Crack the eggs into a large mixing bowl.
    6 large eggs
  3. Add the olive oil, zucchini, carrot, brown onion and spring onions. Seive in the buckwheat flour, arrowroot flour, baking powder, salt, pepper.
    1 large zucchini trimmed and grated, 1 large carrot trimmed and finely grated, 1 brown onion peeled & grated, 5 stems spring onion trimmed and finely sliced, ½ cup buckwheat flour, ½ cup arrowroot flour or tapioca starch, 2 tsp baking powder aluminium free, 1 tsp sea salt flakes, Cracked black pepper to taste, 2/3 cup extra virgin olive oil
  4. Use a fork to whisk together until well combined.
  5. If adding bacon, add the bacon pieces to the bowl and mix through. To make vegetarian, simply leave out the bacon.
    2 rashers bacon rind removed and thinly sliced, optional
  6. Pour the mixture into the baking dish and spread out evenly. Top with halved cherry tomatoes.
    100 g mixed cherry tomatoes halved
  7. Place into oven and bake for 45 minutes. Remove from the oven, slice and serve.

Notes

Nutrition facts are an estimate only. 

Storage

Store covered in the fridge for up to 4 days. To freeze, transfer slices to an airtight container and freeze for up to 3 months. 

Vegetarian Option

Leave out the bacon to make this recipe vegetarian. 
 

Nutrition

Calories: 192kcalCarbohydrates: 11gProtein: 4gFat: 15gSaturated Fat: 3gPolyunsaturated Fat: 2gMonounsaturated Fat: 10gTrans Fat: 1gCholesterol: 93mgSodium: 239mgPotassium: 254mgFiber: 1gSugar: 2gVitamin A: 1236IUVitamin C: 8mgCalcium: 57mgIron: 1mg
Course: Appetizer,lunchbox,Mains,Sides,Snacks
Cuisine: Dairy Free,Gluten Free,Vegetarian
Diet: Diabetic,Gluten Free,Low Lactose,Vegetarian
Keyword: savoury slice,zucchini,zucchini slice
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My debut cookbook–Our Nourishing Week

My debut cookbook Our Nourishing Week is a collection of 85+ easy and nutritious recipes for the whole family. It includes 6 weeks of meal plans, complete with shopping lists – simplifying your family meals for an easy, healthy week – every week.

order now

Hi, I’m Sarah!

I’m a nutritionist turned healthy recipe developer who is all about creating delicious food designed to nourish. I love using wholefood ingredients and have a strong focus on gluten free, dairy free and refined sugar free recipes.

MORE ABOUT ME >

5 from 3 votes

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Recipe Rating




  1. Hannah

    October 2, 2021 AT 8.50 PM

    5 stars
    A lovely, easy to make and super nutritious recipe! We love a bit of cheesy flavour so added nutritional yeast. I also threw in some thyme. My two little kids loved it, as did I. Will be on regular rotation here.

    Reply
  2. Leah Lockhart

    August 30, 2022 AT 11.59 AM

    5 stars
    This recipe was delicious! I will definitely make it again. One question, though. How much in cups is one large zucchini? Store bought and home grown are two different sizes of large!

    Reply
    1. Sarah Bell

      August 30, 2022 AT 6.09 PM

      I’m so glad you loved it! That’s a really good point, I will make this again soon and measure how many cups of zucchini it would be. Thank you for bringing this up x

      Reply
    2. Vivian

      March 11, 2024 AT 10.44 PM

      Good question!

      Reply
  3. Shell

    December 25, 2022 AT 12.48 AM

    I accidentally used extra large eggs and noticed the mixture was looking very wet. I only added 1/3 a cup of oil and did a couple of test cooks with one muffin. In the end I had to add another whole cup of flour and more baking powder to get the right consistency. Absolutely delicious. I added frozen corn kernels and wish I’d thought of the nutritional flakes. I’ll definitely make these again thanks for the recipe.

    Reply
    1. Sarah Bell

      December 29, 2022 AT 9.27 AM

      Hi Shell, I’m glad you enjoyed it! The mixture typically is quite wet. Vegetables like zucchinis and onions can also vary a lot in size and hold a lot of moisture so this can affect the overall texture as well. The best thing about this recipe is how forgiving it is. Adding frozen corn kernels is a great idea!

      Reply
  4. Jessie

    February 4, 2025 AT 6.44 PM

    5 stars
    This recipe comes up a treat each time, & my son loves it. I ommit the onion and its still super tasty.Thank you

    Reply
    1. Sarah Bell

      February 17, 2025 AT 11.55 AM

      I am so happy to hear that! It’s one of my favourites that I go back to time and time again.

      Reply

My debut cookbook–Our Nourishing Week

My debut cookbook Our Nourishing Week is a collection of 85+ easy and nutritious recipes for the whole family. It includes 6 weeks of meal plans, complete with shopping lists – simplifying your family meals for an easy, healthy week – every week.

order now

Hi, I’m Sarah!

I’m a nutritionist turned healthy recipe developer who is all about creating delicious food designed to nourish. I love using wholefood ingredients and have a strong focus on gluten free, dairy free and refined sugar free recipes.

MORE ABOUT ME >

Hey there, I’m Sarah!

I’m a Bachelor qualified Nutritionist turned healthy recipe developer and the creator of Our Nourishing Table.

I love creating easy to make, nutrient-filled recipes from quick dinner recipes and make-ahead breakfasts to healthy treats and luscious desserts (with a healthy spin of course).

more about me

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