Oven-Baked Zucchini and Cheddar Slice

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A classic Australian family favorite, this savory zucchini and cheddar slice is perfect for a quick dinner or lunch, boasting a tender, cheesy interior with a golden crust. This australian-inspired vegetarian (vegetarian) ready in about 55 minutes pairs medium (about 600g) zucchini, (100g), grated cheddar cheese, large eggs for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 250 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 40 min Serves 6 Australian cuisine 250 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat the oven to 350°F (175°C). Grate 3 medium zucchinis (about 600g), then squeeze out excess moisture using a clean kitchen towel.
  2. Step 2: Heat 2 tbsp olive oil in a skillet over medium heat, add 1 finely chopped medium onion (150g) and sauté for 5 minutes until soft and translucent.
  3. Step 3: In a large bowl, whisk 4 large eggs with 1/2 cup milk (120ml) until combined. Stir in 1 cup self-raising flour (120g), 1 tsp salt, 1/2 tsp black pepper, and 1 tsp dried mixed herbs until smooth.
  4. Step 4: Fold in the grated zucchini, sautéed onion, and 1 cup grated cheddar cheese (100g) into the batter until evenly mixed.
  5. Step 5: Pour the mixture into a greased 9x13 inch (23x33 cm) baking dish, smoothing the top with a spatula.
  6. Step 6: Bake for 35-40 minutes until the slice is set, golden on top, and a skewer inserted in the center comes out clean.
  7. Step 7: Allow to cool for 10 minutes before slicing into squares and serving warm or at room temperature.

Equipment for this recipe

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Frequently asked questions

How long does Oven-Baked Zucchini and Cheddar Slice take to make?

Total time is about 55 minutes (15 min prep + 40 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Oven-Baked Zucchini and Cheddar Slice?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep medium (about 600g) zucchini from drying out.

Can I substitute ingredients in Oven-Baked Zucchini and Cheddar Slice?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Oven-Baked Zucchini and Cheddar Slice for a different number of people?

The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Oven-Baked Zucchini and Cheddar Slice vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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