Zucchini Slice Recipe

Zucchini Slice Recipe tastes cheesy, savory, and a little bit herby, with golden edges and a soft, custardy middle. It works perfectly for busy families, meal prep fans, and anyone who wants a quick bake that goes from fridge to table in under an hour. I first baked a version of this on a Tuesday night when I had more zucchini than patience, and it instantly joined my regular rotation.

Why Make This Zucchini Slice Recipe at Home

This Zucchini Slice Recipe uses simple ingredients, comes together fast, and tastes like a cross between a crustless quiche and a cheesy frittata. You mix everything in one bowl, bake it, and cut it into tidy squares that pack easily for lunches or snacks.

You control the salt, the cheese, and the veggies, so it fits many diets and picky eaters. It also uses budget friendly pantry staples and rescues that pile of zucchini in your crisper before it turns sad and bendy.

“This Zucchini Slice Recipe tastes like comfort food, packs like meal prep, and disappears faster than I can cut it into squares. ★★★★★”

Ingredients You Need

Fresh ingredients

• Zucchini: 3 medium, about 4 cups grated, firmly packed
  • I like firm, small to medium zucchini because they taste sweeter and hold less water.
• Onion: 1 small, finely chopped
  • Yellow or sweet onion works best for a mellow flavor.
• Garlic: 2 to 3 cloves, minced
• Eggs: 5 large
• Cheddar cheese: 1 cup shredded, packed
  • Use sharp cheddar for more flavor; pre shredded works, but block cheese melts smoother.
• Green onions or chives: 2 tablespoons sliced, optional for extra flavor

Dry ingredients and pantry staples

• All purpose flour: 1 cup
  • You can swap half with whole wheat flour for a heartier slice.
• Baking powder: 1 teaspoon
• Fine sea salt: 1 teaspoon, plus more to taste
• Black pepper: 1 teaspoon, freshly ground
• Dried Italian seasoning or dried oregano: 1 teaspoon
• Smoked paprika: 1 teaspoon, optional but tasty
• Olive oil: 2 tablespoons for the batter
• Neutral oil or butter: 1 to 2 teaspoons for greasing the pan

Optional add ins and substitutions

• Cooked bacon or ham: 1 cup chopped, for a meatier slice
• Feta cheese: 1/2 cup crumbled, in place of some cheddar
• Grated carrot: 1/2 to 1 cup, squeezed dry, for extra veggies
• Gluten free option: use a 1 to 1 gluten free baking blend instead of regular flour
• Dairy free option: use a dairy free shredded cheese and a neutral oil spray for the pan

Equipment list

• 8 by 12 inch or 9 by 13 inch baking dish
• Large mixing bowl
• Box grater or food processor with grating disc
• Clean kitchen towel or cheesecloth to squeeze zucchini
• Whisk and spatula
• Knife and cutting board
• Cooling rack

Tips & Mistakes

• Squeeze the zucchini very well, or the slice turns soggy and dense.
• Pack the grated zucchini into the measuring cup, so you keep the right veggie to egg ratio.
• Line the pan with parchment and grease it, so the slice releases cleanly and keeps its shape.
• Do not overmix the batter; stir just until the flour disappears, or the texture turns tough.
• Spread the batter evenly in the pan, or some pieces bake dry while others stay underdone.
• Check doneness with a knife in the center; if it comes out wet, bake a few more minutes.
• Let the slice rest 10 to 15 minutes before cutting, or it crumbles and looks messy.
• Cool completely before freezing, or ice crystals form and change the texture.

How to Make Zucchini Slice Recipe

Step 1: Prep and salt the zucchini

Wash the zucchini and trim the ends. Grate it on the large holes of a box grater or in a food processor. Place the grated zucchini in a colander set over the sink, sprinkle with a big pinch of salt, and toss.

Let it sit 10 minutes so the salt pulls out moisture. Transfer the zucchini to a clean kitchen towel, wrap it up, and squeeze hard over the sink until almost no liquid drips out. This step keeps the Zucchini Slice Recipe light and not watery.

Step 2: Mix the dry ingredients

In a large mixing bowl, whisk together the flour, baking powder, salt, pepper, Italian seasoning, and smoked paprika. Break up any flour clumps with the whisk. Seasoning the flour evenly helps the flavor spread through every bite.

If you use gluten free flour, whisk it gently, since some blends feel more delicate. Taste a pinch of the dry mix; you should notice a light savory flavor from the herbs and salt.

Step 3: Whisk the eggs and wet ingredients

In a separate bowl or large measuring jug, crack in the eggs. Add the olive oil and whisk until the eggs look smooth and slightly frothy. This step helps the slice bake with a tender, custardy texture.

Stir in the minced garlic and chopped onion. If you use green onions or chives, mix them in now so they spread evenly.

Step 4: Combine wet and dry mixtures

Pour the egg mixture into the bowl with the flour mixture. Use a spatula or whisk and stir until you see no visible dry flour. Scrape the sides and bottom of the bowl so everything mixes evenly.

Fold in the grated zucchini and shredded cheddar cheese. Stir gently until the veggies and cheese look evenly distributed, but stop before the batter turns gluey.

Step 5: Prepare the pan

Preheat your oven to 350 degrees Fahrenheit. Grease your baking dish lightly with oil or butter, then line it with parchment paper, leaving some overhang on the long sides. Grease the parchment as well, so the slice lifts out easily.

Pour the batter into the prepared pan. Spread it into an even layer with a spatula and smooth the top.

Step 6: Bake the zucchini slice

Place the pan on the center rack of the oven. Bake 30 to 40 minutes, until the top looks golden and puffed and the edges pull slightly from the sides. Insert a knife or toothpick into the center; it should come out mostly clean with just a few moist crumbs.

If the top browns too quickly, tent a piece of foil loosely over the pan for the last 5 to 10 minutes. Once baked, remove the pan from the oven and set it on a cooling rack.

Step 7: Rest, slice, and serve

Let the Zucchini Slice Recipe rest in the pan for 10 to 15 minutes. Use the parchment overhang to lift the entire slab onto a cutting board. Cut into squares or rectangles, depending on how you plan to serve it.

Serve warm, at room temperature, or chilled from the fridge. I like to sprinkle a little extra black pepper and some chopped herbs on top right before serving.

Variations I've Tried

I often add cooked chopped bacon and a handful of frozen peas for a brunch style version that kids inhale. Sometimes I swap half the cheddar with feta and add chopped sun dried tomatoes for a more tangy, savory slice. A veggie packed version with zucchini, carrot, and corn tastes great in lunchboxes and reheats nicely.

You can also stir in a spoonful of pesto instead of dried herbs for a bright, herby flavor. If you want a higher protein version, add an extra egg and a bit more cheese, then bake a few extra minutes.

How to Serve Zucchini Slice Recipe

Serve this Zucchini Slice Recipe warm with a simple green salad and sliced tomatoes for a light lunch or dinner. Pack cooled slices into lunchboxes with cucumber sticks, hummus, and fruit for a balanced meal. Cut smaller squares and serve them as finger food at potlucks, picnics, or kids’ parties.

You can also top a warm slice with a spoonful of Greek yogurt, salsa, or avocado for extra creaminess. I often enjoy a square cold from the fridge with a big glass of iced tea when I need a quick snack.

How to store

• Fridge: Cool the zucchini slice completely, then store pieces in an airtight container for up to 4 days.
• Freezer: Wrap individual squares tightly in plastic or parchment, place them in a freezer bag, and freeze for up to 2 months.
• Reheat in oven: Place slices on a baking sheet, cover loosely with foil, and warm at 325 degrees Fahrenheit for 10 to 15 minutes until heated through.
• Reheat in microwave: Heat a slice on a microwave safe plate in 20 to 30 second bursts until warm, and let it sit 1 minute so the heat spreads evenly.

Zucchini Slice Recipe

Zucchini Slice Recipe is a cheesy, savory bake with golden edges and a soft, custardy middle, perfect for quick meals, snacks, or meal prep.

Pin This Recipe Share on Facebook

Prep Time 20 minutes mins

Cook Time 40 minutes mins

Total Time 1 hour hr

Servings: 12

Course: Dinner

Ingredients

  

• 3 medium zucchini, grated and firmly packed (about 4 cups)
• 1 small onion, finely chopped
• 2-3 cloves garlic, minced
• 5 large eggs
• 1 cup shredded cheddar cheese, packed
• 2 tablespoons sliced green onions or chives

• 1 cup all-purpose flour
• 1 teaspoon baking powder
• 1 teaspoon fine sea salt, plus more to taste
• 1 teaspoon freshly ground black pepper
• 1 teaspoon dried Italian seasoning or dried oregano
• 1 teaspoon smoked paprika
• 2 tablespoons olive oil
• 1-2 teaspoons neutral oil or butter, for greasing the pan

• 1 cup cooked bacon or ham, chopped
• 1/2 cup crumbled feta cheese
• 1/2-1 cup grated carrot, squeezed dry

Instructions

 

1. Wash the zucchini and trim the ends. Grate on the large holes of a box grater or with a food processor grating disc.
2. Place the grated zucchini in a colander over the sink, sprinkle with a big pinch of salt, and toss. Let sit for 10 minutes to draw out moisture.
3. Transfer the zucchini to a clean kitchen towel, wrap it up, and squeeze firmly over the sink until very little liquid drips out.

1. In a large mixing bowl, whisk together the flour, baking powder, salt, black pepper, Italian seasoning or oregano, and smoked paprika if using, breaking up any lumps.

1. In a separate bowl or large measuring jug, whisk the eggs with the olive oil until smooth and slightly frothy.
2. Stir in the minced garlic, chopped onion, and green onions or chives if using.

1. Pour the egg mixture into the bowl with the dry ingredients. Stir just until no dry flour remains, scraping the sides and bottom of the bowl.
2. Fold in the squeezed zucchini and shredded cheddar cheese until evenly distributed, being careful not to overmix.

1. Preheat the oven to 350°F (175°C). Lightly grease an 8×12-inch or 9×13-inch baking dish with oil or butter, then line with parchment paper, leaving an overhang on the long sides. Grease the parchment as well.
2. Pour the batter into the prepared pan and spread into an even layer, smoothing the top.
3. Bake for 30–40 minutes, or until the top is golden and puffed, the edges pull slightly from the sides, and a knife or toothpick inserted in the center comes out mostly clean with a few moist crumbs.
4. If the top browns too quickly, tent loosely with foil for the last 5–10 minutes of baking.

1. Remove the pan from the oven and place on a cooling rack. Let the zucchini slice rest in the pan for 10–15 minutes.
2. Use the parchment overhang to lift the slab onto a cutting board. Cut into squares or rectangles.
3. Serve warm, at room temperature, or chilled. Optionally finish with extra black pepper and chopped fresh herbs before serving.

Notes

Nutrition Information
Approximate per 1 of 12 slices (without optional add-ins): 180 calories; fat 12 g; saturated fat 4.5 g; carbohydrates 9 g; fiber 1 g; sugars 3 g; protein 9 g; sodium 430 mg. Values are estimates and will vary based on brands, add-ins, and portion size.

Storage: Cool completely, then refrigerate in an airtight container for up to 4 days. For longer storage, wrap individual squares and freeze for up to 2 months. Reheat in a 325°F oven for 10–15 minutes or in the microwave in 20–30 second bursts until warmed through.