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Easy Cheesy Zucchini Casserole Recipe (Quick to Mix)

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This cheesy zucchini casserole recipe is perfect as a side dish, but hearty enough for main dish for a light supper. The mix of spices gives a nod to veggie lasagna, but it's much easier to make.

It works great with fresh zucchini or yellow squash from our garden or farmers market. You can also used frozen zucchini, thawed and drained.

easy cheesy zucchuni casserole

Tips for your Zucchini Casserole

If you use small to medium zucchinis, there's no need to peel. For jumbo zucchini, it's probably best to peel and remove the large seeds before grating.

Use a box grater for shredding, or a food processor. If you don't have either, go ahead and chop the zucchini into small chunks. The recipe is forgiving.

You can use a little cheese, or a lot, from 1/2 cup to 1 1/2 cups. Our favorite is Parmesan cheese, but cheddar cheese and Swiss also pair well with squash. (Try this spaghetti squash au gratin for a low carb squash casserole.)

I use my glass Pyrex 9×13 baking dish, which holds 3 quarts. You should also be able to fit this into a 2 quart baking dish, or a 10 inch pie pan. The pie pan would be a close fit. We like the crispy edges, so I use a wider pan for our zucchini casserole.

My fat of choice is melted butter, but if you need to avoid dairy, go ahead and swap in some non-dairy cheese and your preferred cooking oil.

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Zucchini Casserole

This easy zucchini casserole makes a light main dish for brunch or supper, or a nice side dish.

  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 40 minutes
  • Yield: 12 serving 1x
  • Category: Side dish

Ingredients

Scale
  • 3 cups grated zucchini
  • 1 cup all purpose flour
  • 1 cup chopped onion
  • 1/2 cup melted butter
  • 4 eggs
  • 1/21 1/2 cup grated Parmesan, Cheddar, or Swiss cheese
  • 1 1/2 tsp baking powder
  • 3/4 tsp salt
  • 1/2 tsp pepper
  • 1/2 tsp seasoned salt
  • 1/2 tsp dried oregano
  • 1 tbsp minced garlic
  • 2 tbsp chopped fresh parsley

Instructions

  1. Heat oven to 350 F. Grease a 9 by 13 inch pan or 3 quart baking dish.
  2. Mix all ingredients together in a bowl. Pour into pan.
  3. Bake for 30-35 minutes, until center starts to set and edges are lightly browned.

Keywords: zucchini, brunch recipes, casserole

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easy zucchini casserole

More Zucchini Recipes

Is it possible to have too many zucchini recipes? I haven't hit my limit yet. (We made this zucchini casserole three times in one week, and two batches of zucchini bread.)

Summer squash is abundant and inexpensive, and adapts well to savory or sweet recipes. Some of our “go to” recipes include:

Mom's Best Zucchini Bread

Chocolate Zucchini Cake Roll

Zapple” Pie – Mock apple pie made with zucchini

Zucchini Gummy Candy – great for the kids, and kids at heart. No artificial sweeteners or colors.

Honey Sweetened Relish

Cheesy Garlic Zucchini Bread

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