Tuna Noodle Casserole with Bechamel Sauce

Ingredients (14)

• + ½ (16 ounce) package penne pasta add to pantry
• + 5 tablespoons salted butter, divided add to pantry
• ✓ 3 tablespoons all-purpose flour
• + 2 ½ cups cold milk add to pantry
• + 2 tablespoons dried minced onion add to pantry
• + 2 leaf (blank)s bay leaves add to pantry
• + ⅛ teaspoon cayenne pepper add to pantry
• + ½ teaspoon salt, divided add to pantry
• + 2 (6 ounce) cans tuna in water, drained add to pantry
• + 1 ½ cups frozen peas add to pantry
• + 1 ½ cups grated Colby-Jack cheese add to pantry
• + ½ teaspoon freshly ground black pepper add to pantry
• ✓ 4 slices bread, cut into 1/2-inch pieces
• + ¼ cup grated Parmesan cheese add to pantry