No-Bake Mac and Cheese with Crispy Crumb Topping - Got Milk

Ingredients

• 3/4 cup panko bread crumbs
• 5 tablespoons butter , divided
• 1/4 teaspoon paprika
• 3 cups uncooked elbow macaroni
• 1/2 cup finely chopped onion
• 3 tablespoons all-purpose flour
• 3 cups whole milk
• 1/2 teaspoon salt
• 1/4 teaspoon freshly ground black pepper
• 1 teaspoon dry mustard
• 4 ounces cream cheese , cut into chunks
• 2 cups shredded American cheese
• 2 cups shredded Cheddar cheese