Parmesan Zucchini Squares – Zucchini Casserole with Bisquick and Parmesan Cheese

Parmesan Zucchini Squares are a cheesy herb quick bread that can be served as an appetizer or a side dish for any meal. Zucchini is a great base ingredient when baking but is also great for savory dishes.

This recipe is basically a zucchini casserole with Bisquick baking mix and Parmesan Cheese. The dish comes together easily, makes enough to serve a crowd, and is a favorite recipe of most who try it.

Parmesan Zucchini Squares Recipe

I noticed that two women submitted the exact same recipe called zucchini appetizers in my North Carolina State Elks Association Cook Book, and we always have too many zucchini in the middle of garden season. So I grabbed a couple and got a pan of Parmesan Zucchini Squares baking in the oven.

The aroma that comes from the oven while these are baking is heavenly. It comes from the combination of dried oregano and parsley, and also the  garlic powder and minced fresh garlic.

The herbs, garlic and Parmesan cheese bring the flavor while the zucchini creates a nice texture. I love it, and it’s safe to say that it will be a regular on our summer menu.

Zucchini Casserole with Bisquick and Parmesan Cheese

This quick Bisquick Zucchini bread goes alongside any meal as a side, or they make a great baked zucchini appetizer. The recipe makes a large 13 x 9 inch pan which makes a great party option.

If you’ve never used a baking mix like Bisquick, then I recommend getting a box to keep on hand. You can make a quick biscuit or pancake, or it makes a great base for breads like this Parmesan Herb Zucchini bread.

For the Parmesan Cheese in these Parmesan Zucchini Squares, just go ahead and use the cheap parmesan cheese in the green jar. You know the one. Your kids probably sprinkle it on top of spaghetti.

Ingredient List for Bisquick Zucchini Bake

Eggs

Bisquick Baking Mix (biscuit mix)

Onions, chopped

Salt

Parmesan Cheese, grated

Garlic Powder

Dried Oregano

Black Pepper

Garlic

Vegetable Oil

Dried Parsley

Fresh Zucchini, thinly sliced

How to Make Baked Zucchini Appetizers

Step By Step Instructions

1. Beat eggs in a large bowl.
2. Add Bisquick, chopped onions, salt, grated Parmesan cheese, garlic powder, oregano, black pepper, garlic, oil and parsley and mix until incorporated.
3. Stir in thinly sliced zucchini to the bisquick mixture.
4. Pour into a 13 x 9 inch baking dish that has been sprayed with nonstick cooking spray.
5. Bake in a preheated 350 degree F oven for 35 to 40 minutes or until golden brown.
6. Cut into squares and serve hot, cold or room temperature. Try slathering with butter!

For the full recipe steps and ingredient amounts for Parmesan Zucchini Bread, scroll to the recipe card at the bottom of this post.

What to do with too many zucchini?

Zucchini tend to multiply exponentially in the garden overnight. While desserts with zucchini tend to be a go-to, I like to use my zucchini as a side dish. Check out these 10 side dish recipes starring zucchini.

1. Spicy Roasted Zucchini 
2. Zucchini Tomato Bacon Bake
3. Healthy Zucchini Tomato Casserole
4. Stir Fried Italian Zucchini
5. Cheesy Zucchini Soup
6. Zucchini Quiche
7. Easy Pan Fried Zucchini
8. Cheesy Summer Squash and Zucchini Casserole 
9. Healthy Air Fryer Zucchini
10. Zucchini Tomato Casserole with Ground Beef
11. Dilled Zucchini

Recipe FAQs

• This makes the perfect baked zucchini bites. Cut it in squares and serve warm, room temperature, or it’s even delicious cold.
• Try smothering in a thick layer of butter before serving!
• Use a food processor for an quick easy way to thinly slice zucchini for Parmesan Zucchini Squares.  If you don’t have a food processor, an old-fashioned grater works too.
• Change up the dried herbs (such as basil) to fit your flavor preference or use what you have on hand. Fresh parsley also works great.
• Try changing up the cheese by substituting Parmesan for sharp cheddar cheese or mozzarella.
• Check out our Amazon Store for some of our favorite pantry ingredients and kitchen items.

Do you leave the skin on zucchini when you cook it?

The skin of a zucchini is thin, meaning there’s no need to peel it before you cook it. Go ahead and leave the skin on to save yourself some time.

More Zucchini Bread Recipes:

Double Chocolate Zucchini Bread with Mocha Glaze

Mom’s Perfect Chocolate Chip Zucchini Bread

Caramel Zucchini Bread

 Zucchini Bread Recipe with Applesauce