This healthy zucchini slice is a simple, cheesy vegetable bake packed with zucchini, broccoli, spinach, peas, eggs, and cottage cheese. Everything is mixed together in one bowl before being baked until golden and firm.

With a soft, tender center and lightly crisp edges, this vegetable slice makes an easy breakfast, lunch, dinner, snack, or lunchbox option. It can be enjoyed warm, at room temperature, or chilled, making it especially useful for meal prep.

Why You’ll Love This Zucchini Slice

This recipe is nutritious, filling, and easy to prepare. It makes 12 portions, making it a convenient choice for busy weekdays and make-ahead meals.

Eggs and cottage cheese create a protein-rich base, while cheddar adds a delicious savory flavor. Zucchini, broccoli, spinach, and peas provide plenty of vegetables, color, and texture.

Serve it with toast and avocado for breakfast, a fresh salad for lunch, or roasted vegetables for dinner. It also makes an easy grab-and-go snack.

What Makes It Easy?

There are no complicated sauces, layers, or special techniques. Simply cook the onion, squeeze the excess moisture from the zucchini, mix the ingredients together, and bake.

Most of the preparation takes place in one large mixing bowl, so there is very little washing up afterward.

The Key to a Firm Zucchini Slice

The most important step is squeezing the zucchini thoroughly.

Zucchini contains a lot of water, and excess moisture can leave the finished slice soft or watery. After grating the zucchini, place it in a clean kitchen towel or cheesecloth and squeeze firmly until as much liquid as possible has been removed.

This helps the eggs and flour set properly and gives the slice enough structure to cut neatly.

Preparing the Vegetables

There is no need to peel the zucchini. Wash it, trim the ends, and grate it using the coarse side of a box grater. The skin adds attractive green flecks to the finished slice.

Cut the broccoli into small pieces so it has enough time to become tender during baking. Roughly chop the baby spinach and add the frozen peas straight from the freezer.

If using frozen spinach, thaw it completely and squeeze out as much excess liquid as possible before adding it to the mixture.

Why Cook the Onion First?

Cooking the onion before adding it to the mixture softens it and brings out its natural sweetness. It also removes the stronger flavor associated with raw onion.

Cook the diced onion in olive oil over medium heat for 5–6 minutes, stirring occasionally, until soft and lightly golden. Set it aside to cool slightly while preparing the remaining ingredients.

Eggs, Cottage Cheese and Cheddar

The eggs provide the structure needed to hold the vegetables together as the slice bakes.

Whisk the eggs with the Dijon mustard, salt, and pepper before adding the remaining ingredients. This helps distribute the seasoning evenly throughout the mixture.

Low-fat cottage cheese adds moisture and creaminess, while cheddar provides a richer savory flavor and helps create the golden, cheesy top.

Why Add Flour?

Self-rising flour helps bind the ingredients and gives the zucchini slice enough structure to hold its shape when cut.

If you only have all-purpose flour, use it with 1 teaspoon of baking powder.

How to Get a Golden Top

Spread the mixture evenly in the prepared baking dish so it cooks consistently.

Bake at 355°F (180°C) for approximately 35 minutes, or until the top is golden and the center feels firm. A knife inserted into the middle should come out clean.

For an extra-golden finish, place the cooked slice under the broiler for 2–3 minutes. Keep a close eye on it because the cheese can brown quickly.

Let It Rest Before Cutting

Allow the slice to rest for 5–10 minutes after removing it from the oven.

Resting gives the eggs, flour, cheese, and vegetables time to settle, making the slice easier to cut and remove from the pan.

Use the baking-paper overhang to lift the slice onto a cutting board, then cut it into 12 portions.

Serving Suggestions

This versatile vegetable slice can be enjoyed at any time of day.

For breakfast or brunch, serve it with:

Fresh fruit
Avocado
Toast
Greek yogurt
A simple green salad

For lunch or dinner, pair it with a crisp salad, roasted vegetables, or your favorite side dishes.

It tastes delicious warm, at room temperature, or straight from the refrigerator.

Storage and Meal Prep

Allow the slices to cool completely before storing them in an airtight container.

Keep refrigerated for up to 4 days. If stacking the portions, place parchment paper between the slices to prevent them from sticking together.

For longer storage, wrap individual portions well and freeze for up to 3 months. Thaw overnight in the refrigerator before reheating.

How to Reheat

For the best texture, place a portion in an oven preheated to 350°F (175°C) and heat for approximately 10 minutes.

You can also warm the slice in a skillet over medium heat. A microwave is another quick option, although it may make the edges slightly softer.

Only reheat the portion you plan to eat.

Easy Variations

The basic recipe is easy to customize. Try adding:

Fresh parsley, basil, dill, or chives
Crushed red pepper flakes
Chopped jalapeño
Corn
Diced bell pepper
Finely chopped mushrooms
Grated carrot
Finely chopped cauliflower

For a Mediterranean-style variation, replace half of the cheddar with crumbled feta.

When adding extra vegetables, consider their moisture content. Watery vegetables should be drained or cooked first to prevent the finished slice from becoming soggy.

Can You Replace the Cottage Cheese?

Yes. Ricotta is a good substitute for cottage cheese and gives the slice a slightly different but equally creamy texture.

Use approximately the same quantity so the balance of wet and dry ingredients remains similar.

Can You Make It Gluten Free?

Yes. Replace the self-rising flour with a gluten-free self-rising flour blend.

If using plain gluten-free flour, add a suitable raising agent according to the manufacturer’s instructions. Gluten-free flour blends vary in how much moisture they absorb, so the consistency of the mixture may differ slightly.

Why Is My Zucchini Slice Watery?

Excess moisture is usually the main reason.

Zucchini releases a considerable amount of liquid after grating, so squeezing it thoroughly is essential. Frozen spinach can also add excess water if it has not been properly thawed and drained.

A wet center can also mean the slice needs more time in the oven. Since ovens vary, use the appearance and firmness of the center as your guide rather than relying only on the stated cooking time.

Can You Eat Zucchini Slice Cold?

Yes. In fact, the slice becomes slightly firmer once chilled, making it particularly convenient for lunchboxes, picnics, and meal prep.

Enjoy it straight from the refrigerator or allow it to come to room temperature before serving.

Recipe Card

Healthy Zucchini Slice with Broccoli, Spinach and Cheese

Description

A simple baked vegetable slice made with zucchini, broccoli, spinach, peas, eggs, cottage cheese, cheddar, and self-rising flour. It’s easy to prepare, filling, and ideal for breakfast, lunch, dinner, snacks, or meal prep.

Prep Time: 20 minutes
Cook Time: 35 minutes
Total Time: 55 minutes
Servings: 12 slices

Ingredients

2 tablespoons olive oil, for cooking
1 medium onion, finely diced
1 medium zucchini, about 220 g, grated
2 cups broccoli florets, finely chopped
2 cups baby spinach, roughly chopped
1 garlic clove, minced
5 large eggs
1 teaspoon Dijon mustard
1 teaspoon salt
½ teaspoon freshly ground black pepper
1 cup self-rising flour
200 g low-fat cottage cheese
115 g grated cheddar cheese
½ cup frozen peas
2 tablespoons olive oil, for the batter

If using all-purpose flour: Add 1 teaspoon baking powder.

Equipment

Large mixing bowl
Frying pan
Whisk
Wooden spoon
Box grater
Approximately 7 × 12-inch baking dish
Baking paper
Sharp knife

Instructions

1. Prepare the Baking Dish

Preheat the oven to 355°F (180°C).

Lightly grease a baking dish and line it with baking paper, leaving some paper hanging over the sides. This will make it easier to lift out the finished slice.

2. Cook the Onion

Heat 2 tablespoons of olive oil in a frying pan over medium heat.

Add the diced onion and cook for 5–6 minutes, stirring occasionally, until soft and lightly golden. Remove from the heat and allow it to cool slightly.

3. Prepare the Vegetables

Grate the zucchini using the coarse side of a box grater.

Place the grated zucchini in a clean kitchen towel or cheesecloth and squeeze firmly to remove as much liquid as possible.

Finely chop the broccoli, roughly chop the spinach, and mince the garlic. Keep the frozen peas frozen.

4. Make the Batter

Crack the eggs into a large mixing bowl.

Add the Dijon mustard, salt, and black pepper. Whisk until well combined.

Gradually add the self-rising flour and whisk until you have a thick, mostly smooth batter.

5. Add the Cheese

Stir in the cottage cheese and grated cheddar until evenly combined.

6. Add the Vegetables

Add the cooked onion, garlic, squeezed zucchini, broccoli, spinach, and frozen peas.

Pour in the remaining 2 tablespoons of olive oil and gently fold everything together until the vegetables are evenly distributed.

7. Bake

Pour the mixture into the prepared baking dish and spread it into an even layer.

Bake for approximately 35 minutes, or until the top is golden and the center is firm.

Insert a knife into the center. It should come out clean when the slice is ready.

8. Brown the Top

For a deeper golden finish, place the cooked slice under the broiler for 2–3 minutes.

Watch it carefully to prevent the cheese from burning.

9. Rest and Serve

Remove the slice from the oven and allow it to rest for 5–10 minutes.

Use the baking-paper overhang to lift it from the dish and transfer it to a cutting board. Cut into 12 portions.

Serve warm, at room temperature, or chilled.

Approximate Nutrition Per Slice

Calories: 175
Protein: 11 g
Carbohydrates: 10 g
Fat: 10 g
Saturated Fat: 3 g
Fiber: 2 g
Sugar: 2 g
Sodium: 330 mg

Nutritional information is an estimate and may vary depending on the ingredients and brands used.

Storage

Refrigerator: Store cooled slices in an airtight container for up to 4 days.

Freezer: Wrap individual portions well and freeze for up to 3 months in a freezer-safe container.

Reheating: Thaw frozen portions overnight in the refrigerator, then reheat in a 350°F (175°C) oven for approximately 10 minutes.