Best Zucchini Casserole Recipe - How To Make Zucchini Casserole

Ingredients

• 2 medium zucchini, sliced into ¼”-thick rounds
• 3 medium Roma tomatoes, sliced into ¼”-thick rounds
• 3 1/2 tbsp. extra-virgin olive oil, divided
• 1/2 tsp. Kosher salt, plus more for seasoning
• Freshly ground black pepper
• 2 slices sourdough or whole wheat bread, cut into cubes (about 1 ½ c.)
• 2/3 c. freshly grated Parmesan
• 3 tbsp. Fresh oregano or thyme leaves
• 3 garlic cloves, roughly chopped
• 1/4 tsp. Crushed red pepper flakes (optional)