Mimi's Meatball Casserole | Easier Eats

Ingredients

• 6 ounces whole-wheat penne
• 2 tablespoons extra-virgin olive oil, divided, plus more, to taste
• 3 slices whole-wheat bread
• 1 pound extra-lean ground turkey
• 8 ounces spicy Italian turkey sausage, casings removed
• 1 large egg, lightly beaten
• 1 teaspoon kosher salt
• 1/4 cup parmesan cheese, freshly grated
• 1/4 cup fresh parsley, chopped, plus more, to taste, for garnish
• 1 small yellow onion, diced
• 2 cloves garlic, minced
• 1 teaspoon dried oregano
• 1/4 teaspoon crushed red pepper flakes
• 1 (32-ounce) container tomato sauce
• 1 (10-ounce) package frozen chopped spinach, thawed and squeezed dry
• 4 ounces whole-fat fresh mozzarella, shredded, plus 4 ounces, thinly sliced, divided