Summer Squash Casserole

Name: Summer Squash Casserole
Prep time: 20 min
Cook time: 45 min
Total time: 1 h 5 min
Cuisine: American, Southern
Ingredients: 2 medium zucchini (thinly sliced); 2 medium yellow squash (thinly sliced); 3 tablespoons unsalted butter (divided); 1 small yellow onion (diced); 2 cloves garlic (finely chopped); 1 1/2 teaspoons kosher salt (divided); 1/2 cup plain full-fat Greek yogurt (substitute sour cream); 1/2 cup whole milk; 2 large eggs (beaten); 1 1/2 cups shredded cheddar cheese (divided); 2 teaspoons fresh thyme (optional); 1 teaspoon lemon juice; 1/2 teaspoon black pepper; 1/4 teaspoon cayenne pepper (optional ); 1 cup french fried onions

Instructions

Prep:20minCook:45min

This summer squash casserole is a southern classic made with seasonal fresh zucchini and yellow squash! The cheesy filing is topped with crispy french fried onions for the perfect side dish!

Updated at: Fri, 20 Feb 2026 19:57:05 GMT