share this post

Zucchini Slice

5 from 219 votes
Jump to Recipe Pin This Recipe!

This recipe may contain Amazon or other affiliate links. As an Amazon Associate I earn from qualifying purchases.

Are you looking for a simple and delicious way to use up your zucchini? If so, you’ll love this zucchini slice recipe, also known as Egg Bake!

It’s a healthy and satisfying dish that can be enjoyed for breakfast, lunch, or dinner.

In this post, I’ll show you how to make this easy zucchini slice with just a few ingredients and some basic steps.

You’ll also find some tips on how to store and reheat it, as well as some variations to customize it to your taste. Let’s get started!

Zucchini Slice

I love baking classic local recipes for my kids’ lunchboxes or breakfasts.

This zucchini bake is one of their favorites. It’s a classic Australian recipe revisited with a French touch, swapping a few ingredients to enhance its flavors.

How To Make A Zucchini Slice

A zucchini slice is a very simple breakfast bake recipe that requires only a few ingredients.


  • Freshly Grated Zucchini – trim the ends and keep the skin on for extra fiber and texture.
  • Large Eggs – I always buy local free-range eggs.
  • Milk of Choice – I used almond milk. Even if the classic Australian recipe uses olive oil, we prefer the texture with milk.
  • Flour – The classic recipe uses all-purpose flour. You can use white whole wheat flour or almond flour as a low-carb alternative. Feel free to use an all-purpose gluten-free flour blend if needed.
  • Baking Powder
  • Salt and Pepper
  • Red Onion or white onions finely chopped.
  • Grated Cheese – I use a combination of grated cheddar and grated Parmesan cheese, but you can use any hard grated cheese you love.


Before you start, preheat the oven to 180°C (350°F). Line a large 20-cm x 30-cm baking dish (9-inch x 13-inch) with parchment paper.

Slightly oil the paper with olive oil and set the dish aside.

First, trim the end of the fresh zucchini and grate them using a box grater.

Squeeze gently to remove some of their juice. This prevents the egg bake from being watery.

You can also use a kitchen towel to squeeze them even more, but it’s not needed if you are using all-purpose flour, squeezing by hand is enough. Set the zucchini aside in a bowl.

How to make Zucchini Slice

Making The Egg Batter

Next, beat the eggs, milk, salt, pepper, dried oregano, and garlic powder in a large mixing bowl.

Then, stir in flour and baking powder until smooth or just a few flour lumps show. Don’t worry about them. They will disappear while baking.

Egg Slice Filling

You don’t have to stir fry the onion or bacon before adding them to the batter.

The onions soften in the oven while baking. That’s the idea of the authentic Australian recipe version.

However, I found the recipe way tastier if you stir fry the bacon pieces in a nonstick skillet over medium heat. Then, stir in the onion and cook in the bacon fat.

Cool down on a plate for a few minutes before adding the egg mixture in the next step.

Combining Ingredients

Now, stir the grated zucchinis, bacon pieces, and onion into the bowl with the egg mixture.

Transfer the eggs and vegetables to the prepared 9-inch x 13-inch baking dish.

Bake in the center of the oven for 30 to 40 minutes at 180°C (350°F).

The baking time varies depending on how well you squeezed out the water from the zucchini and on the size of the dish.

Bake until the top is golden brown and eggs are set in the center.

You can insert a toothpick or skewer in the center of the egg bake to check. If it comes out clean, it’s cooked through.

Zucchini Slice

Cooling Down

Let the zucchini slice cool down for 10 minutes before cutting into squares, and serve lukewarm or cold.

The slices firm up in the fridge overnight, making them perfect for a kid’s lunchbox as they hold their shape perfectly well.

Tips For Making Zucchini Slices Taste Amazing

The classic recipe is pretty simple and straightforward.

However, I find that it can be so much better by adding some simple spices and steps like:

  • Add dried Italian herbs – dried oregano, marjoram, or thyme are the best combination with zucchinis.
  • Stir fry onion in bacon grease – this changes the whole slice’s flavor!
  • Swap the oil for milk – this makes the eggs ultra fluffy and not as packed or dense.
  • Play with cheese flavors – the classic recipe uses grated cheddar but try swapping some of it for freshly grated Parmesan cheese or even crumbled feta, and you will be amazed by the boost of flavor it delivers to the dish.
  • Add other vegetables such as sweet corn kernels, sliced tomatoes, mushrooms, capsicum, or leek.

Want To Save This Recipe?

Enter your email & get this recipe sent to your inbox.

This field is for validation purposes and should be left unchanged.


Zucchini slices are served hot or cold in New Zealand.

It’s a great lunchbox filler for school lunch, and kids enjoy them cold in summer.

Zucchini Slice

Storage Instructions

Store the sliced leftovers in a sealed airtight container in the fridge for up to 4 days.

You can also freeze them for later and thaw them in the fridge the day before.

Allergy Swaps

Below I listed some allergy swaps you can apply to the recipe.

  • Lower Carb – The only ingredient with more carbs in this slice is the all-purpose flour. It can easily be swapped with almond flour use 1 1/2 cups of ultra-fine almond flour instead of 1 cup of flour, and make sure you have squeezed the juice off the zucchini to avoid a watery slice. Low-carb flours won’t absorb the liquid as well, so this step is even more crucial for the low-carb version.
  • Onion-Free – Feel free to skip onion or replace them with olive slices or sundried tomatoes.
  • Vegetarian – You can replace the bacon with sundried tomatoes, olives, or chopped walnuts.
  • Dairy-Free – You can use a dairy-free cheese alternative in the recipe or skip the cheese and add 1/4 cup of nutritional yeast for a dairy-free cheesy flavor.

Frequently Asked Questions

Below are the answers to your most frequent questions about this recipe.

Can I Use Anything Other Than Zucchini?

You can replace grated zucchini with some grated carrots or finely chopped baby spinach.

Can I Use Frozen Zucchinis?

You can use frozen zucchini after thawing them and squeezing out all their juice otherwise the egg filling wouldn’t set properly.

Have you made these zucchini slices? I would love to hear your feedback on this easy recipe, share a comment or review below.

Did You Like This Recipe?

Leave a comment below or head to our Facebook page for tips, our Instagram page for inspiration, our Pinterest for saving recipes, and Flipboard to get all the new ones!

Zucchini Slice

Zucchini Slice

This Zucchini Slice recipe is a healthy, Australian-inspired recipe, also called zucchini egg bake in the US. It's an egg casserole filled with bacon, onions, and cheese for a delicious family breakfast that uses all your summer zucchinis.
Prep: 10 minutes
Cook: 35 minutes
Total: 45 minutes
Yield: 16 slice
Serving Size: 1 slice
5 from 219 votes


This recipe may contain Amazon or other affiliate links. As an Amazon Associate I earn from qualifying purchases.


  • Preheat the oven to 180°C (350°F). Grease a 20-cm x 30-cm baking dish (9-inch x 13-inch) with olive oil. Set it aside.
  • In a non-stick skillet, over medium heat, cook the bacon pieces. When cooked, stir in chopped onion and cook in bacon fat for a few minutes until fragrant and golden. Set aside on a plate to cool.
  • Trim the end of the zucchinis, keep the skin on, and grate finely. Squeeze to release their juice and discard the juice. Set aside the grated zucchinis in a bowl.
  • In a large bowl, whisk egg, milk, dried oregano, salt, pepper, and garlic powder.
  • Whisk in the flour and baking powder until smooth or only a few flour lumps remains.
  • Stir in diced onion and bacon pieces, grated zucchinis, and both grated cheese – cheddar and Parmesan.
  • Pour the mixture into the prepared baking dish and bake in the center rack of the preheated oven for 30-40 minutes or until eggs are set and golden brown on top.
  • Serve hot or cold with scallions or fresh parsley on the side.


  • Store in the fridge, in the baking dish wrapped with plastic wrap for up to 4 days, or freeze and thaw in the fridge the day before.
Tried this recipe?Mention @sweetashoneyrecipes
Nutrition1 slice
Yield: 16 slice


Serving: 1 sliceCalories: 163.2 kcal (8%)Carbohydrates: 3.8 g (1%)Fiber: 1.2 g (5%)Net Carbs: 2.6 gProtein: 7.5 g (15%)Fat: 13.5 g (21%)Saturated Fat: 4.1 g (26%)Polyunsaturated Fat: 1.4 gMonounsaturated Fat: 3.8 gTrans Fat: 0.03 gCholesterol: 75.1 mg (25%)Sodium: 293.6 mg (13%)Potassium: 123.8 mg (4%)Sugar: 1.2 g (1%)Vitamin A: 196.3 IU (4%)Vitamin B12: 0.3 µg (5%)Vitamin C: 4 mg (5%)Vitamin D: 0.4 µg (3%)Calcium: 102.1 mg (10%)Iron: 0.8 mg (4%)Magnesium: 10.5 mg (3%)Zinc: 0.7 mg (5%)
Carine Claudepierre

About The Author

Carine Claudepierre

Hi, I'm Carine, the food blogger, author, recipe developer, published author of a cookbook and many ebooks, and founder of Sweet As Honey.

I have an Accredited Certificate in Nutrition and Wellness obtained in 2014 from Well College Global (formerly Cadence Health). I'm passionate about sharing all my easy and tasty recipes that are both delicious and healthy. My expertise in the field comes from my background in chemistry and years of following a keto low-carb diet. But I'm also well versed in vegetarian and vegan cooking since my husband is vegan.

I now eat a more balanced diet where I alternate between keto and a Mediterranean Diet

Cooking and Baking is my true passion. In fact, I only share a small portion of my recipes on Sweet As Honey. Most of them are eaten by my husband and my two kids before I have time to take any pictures!

All my recipes are at least triple tested to make sure they work and I take pride in keeping them as accurate as possible.

Browse all my recipes with my Recipe Index.

I hope that you too find the recipes you love on Sweet As Honey!

Posted In:

Leave a comment

Your email address will not be published. Required fields are marked *

Recipe Rating

This site uses Akismet to reduce spam. Learn how your comment data is processed.

    3 Thoughts On Zucchini Slice
  1. 5 stars
    Absolutely delish. I added carrot and subbed dried oregano with Italian herbs. And used tasty cheese. Yum! Thank you!

  2. 5 stars
    Made the slices for breakfast (actually I made them yesterday night for this morning). It was very, very good! Thank you!


The recipes, instructions, and articles on this website should not be taken or used as medical advice. The nutritional data provided on Sweetashoney is to be used as indicative only. The nutrition data is calculated using WP Recipe Maker. Net Carbs is calculated by removing the fiber and some sweeteners from the total Carbohydrates.

You should always calculate the nutritional data yourself instead of relying on Sweetashoney's data. Sweetashoney and its recipes and articles are not intended to cure, prevent, diagnose, or treat any disease. Sweetashoney cannot be liable for adverse reactions or any other outcome resulting from the use of recipes or advice found on the Website.