8 ounces (about 2 cups) elbow macaroni
1/4 cup unsalted butter
1/4 cup all-purpose flour
1/2 teaspoon salt
1/4 teaspoon black pepper
1/4 teaspoon paprika (optional, for added flavor)
2 cups whole milk
2 cups shredded sharp cheddar cheese
1/2 cup shredded mozzarella cheese (optional for added creaminess)
1/2 cup breadcrumbs (for topping)