Summer Squash And Zucchini Casserole | Emerils.com

Ingredients

• 1 1/2 tablespoons unsalted butter
• 2 tablespoons olive oil
• 1 cup chopped onions
• 1 1/2 teaspoons salt
• 1 teaspoon freshly ground black pepper
• 1 teaspoon minced garlic
• 2 pounds summer squash (about 6 medium), sliced into thin rounds
• 2 pounds zucchini (about 6 medium), sliced into thin rounds
• 1 teaspoon finely chopped fresh thyme
• 3 large eggs
• 1/4 cup heavy cream
• 1 cup crushed butter crackers
• 1/2 cup grated Parmesan cheese (optional)