Classic zucchini slice recipe is no secret of Australia’s love affair with. From family kitchens to school lunchboxes, this classic recipe has won hearts across generations. Originally shared by Artarmon Public School in Sydney, it has become a national treasure, celebrated by over 1,000 reviewers and embraced by food lovers everywhere. Packed with flavor and nutrients, this dish proves that you can whip up a hearty meal with just a handful of ingredients. Let’s dive into why this zucchini slice recipe stands out and how to make it the star of your table.
Why This Classic Zucchini Slice is a Winner
- Endorsed by Thousands: Tried and tested by schoolchildren and expert food critics alike.
- Minimal Ingredients: Simple pantry staples come together for a protein-rich, delicious meal.
- Versatile and Budget-Friendly: A dish that serves as a lunchbox staple, dinner delight, or party pleaser.
- Customizable: Vegetarian options and ingredient substitutions make it a universal favorite.

Key Ingredients in the Classic Zucchini Slice
The foundation of this recipe, five eggs, delivers a rich source of protein. They not only bind the ingredients but also create a fluffy and satisfying texture. Eggs ensure this dish is as nourishing as it is delicious.
1. Eggs – The Protein Powerhouse
2. Self-Raising Flour – For Lightness and Height
One cup of self-raising flour adds structure to the zucchini slice without making it dense. The balance is key, ensuring the dish is neither too flat nor too pancake-like.
3. Zucchini – The Star Ingredient
Grated zucchini (about 375g or four medium-sized zucchinis) takes center stage. To prevent the mixture from becoming too watery, gently squeeze out excess moisture. A food processor can make grating quick and easy.
4. Onion – A Flavorful Kick
A finely chopped brown onion adds depth to the recipe. Red onion is an excellent substitute if you prefer a milder, sweeter flavor.
5. Bacon – Salty Goodness
The savory richness of bacon enhances the flavor of the slice. For vegetarians, plant-based “bacon” alternatives work beautifully, offering a smoky note without the meat.
6. Cheddar Cheese – For a Moreish Touch
Grated cheddar cheese adds a creamy, indulgent quality. Save on costs by grating a block of cheddar yourself.
7. Vegetable Oil – Ensures Moistness
A splash of vegetable oil keeps the slice from drying out, ensuring each bite is tender and moist.
Step-by-Step Recipe: Australia’s Favourite Zucchini Slice
Ingredients
- 5 large eggs
- 1 cup self-raising flour
- 375g grated zucchini (approximately 4 medium zucchinis)
- 1 brown onion, finely chopped
- 200g diced bacon (or plant-based alternative)
- 1 cup grated cheddar cheese
- 1/4 cup vegetable oil
- Salt and pepper to taste
Method
1. Prepare the Ingredients
- Preheat your oven to 180°C (350°F) and grease a 20x30cm baking dish or line it with baking paper.
- Grate the zucchini and gently squeeze out excess moisture. Finely chop the onion and dice the bacon.
2. Combine the Dry Ingredients
- In a large mixing bowl, sift the self-raising flour.
- Add a pinch of salt and pepper to season.
3. Mix the Wet Ingredients
- In another bowl, whisk the eggs until lightly beaten.
- Stir in the grated zucchini, chopped onion, bacon, grated cheese, and vegetable oil.
4. Combine and Mix
- Gradually fold the dry ingredients into the wet mixture, ensuring everything is evenly combined. The batter should be moist but not runny.
5. Bake to Perfection
- Pour the batter into the prepared baking dish, spreading it out evenly.
- Bake for 30–40 minutes, or until the top is golden brown and a skewer inserted into the center comes out clean.
6. Cool and Serve
- Allow the zucchini slice to cool slightly before cutting into squares. Serve warm or store in the fridge for later.
Tips for the Perfect Zucchini Slice
1. Squeezing the Zucchini
Avoid a soggy slice by gently wringing out grated zucchini using a clean cloth or your hands. A little retained moisture keeps the slice tender but not overly wet.
2. Experiment with Additions
- Add grated carrots or sweet potato for extra veggies.
- Sprinkle some fresh herbs like parsley or chives for added freshness.
- Swap cheddar for feta or Parmesan for a flavor twist.
3. Storage and Reheating
- Storage: Store in an airtight container in the fridge for up to 5 days.
- Reheating: Warm slices in the oven or microwave. They’re also delicious served cold.
Why Zucchini Slice is a Meal Prep Champion
1. Perfect for Busy Days
Zucchini slice is a one-pan wonder, saving you time in the kitchen. It’s easy to make ahead and freezes well, making it ideal for meal prep.
2. A Versatile Dish
From breakfast to dinner, zucchini slice fits every occasion. Pair it with a side salad for a complete meal, or enjoy it as a standalone snack.
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