How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Zucchini, Squash And Corn Casserole?

You need 14 ingredients. The key ingredients include: 1 1/2 lbs yellow squash, sliced 1/4 in thick, 1 1/2 lbs zucchini, sliced 1/4 in thick, 1/4 cup butter, 2 cups sweet onions, diced, and more.

Is Zucchini, Squash And Corn Casserole suitable as vegetarian?

Yes, Zucchini, Squash And Corn Casserole falls under the Vegetarian category and is a great choice for this type of meal.

How do I store leftover Zucchini, Squash And Corn Casserole?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Zucchini, Squash And Corn Casserole Recipe

Name: Zucchini, Squash And Corn Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 1/2 lbs yellow squash, sliced 1/4 in thick; 1 1/2 lbs zucchini, sliced 1/4 in thick; 1/4 cup butter; 2 cups sweet onions, diced; 2 garlic cloves, minced; 3 cups fresh corn kernels; 1 1/2 cups white cheddar cheese, shredded; 1/2 cup sour cream; 1/2 cup mayonnaise; 2 large eggs, lightly beaten; 2 teaspoons black pepper; 1 teaspoon salt; 1 1/2 cups fresh breadcrumbs; 1 cup asiago cheese, grated

Try this homemade Zucchini, Squash And Corn Casserole recipe the whole family will love. Made with yellow squash, zucchini, butter and sweet onions. Eas…

This Zucchini, Squash And Corn Casserole relies on simple, everyday ingredients such as butter, sweet onions, diced, garlic cloves, minced and fresh corn kernels. It comes together quickly and makes 4 servings, at about 1159 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Vegetarian

1159

kcal

Calories

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Zucchini, Squash And Corn Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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