Making Baked Macaroni and Cheese is a straightforward process. Follow these steps for a delicious outcome:

1. Preheat Oven: Begin by preheating your oven to 350°F (175°C).
2. Cook Pasta: In a large pot, bring salted water to a boil. Add the elbow macaroni and cook until al dente, according to package instructions. Drain and set aside.
3. Make Cheese Sauce:
– In a large saucepan, melt the butter over medium heat.
– Whisk in the flour and cook for 1-2 minutes, stirring constantly.
– Slowly add the whole milk while whisking continuously to prevent lumps from forming.
– Continue to cook until the mixture thickens slightly, about 5-7 minutes.
– Stir in the Dijon mustard (if using), cheddar, mozzarella, and Parmesan cheese until fully melted and combined. Season with salt and black pepper to taste.
4. Combine Pasta and Sauce: Add the drained macaroni to the cheese sauce and stir well to combine, ensuring the pasta is fully coated.
5. Prepare Topping: In a small bowl, combine the breadcrumbs, olive oil, and paprika, stirring until breadcrumbs are coated.
6. Transfer to Baking Dish: Pour the macaroni and cheese mixture into a greased 9×13 inch baking dish. Smooth the top with a spatula.
7. Add Topping: Evenly sprinkle the breadcrumb mixture over the mac and cheese for a crispy top.
8. Bake: Place the baking dish in the preheated oven and bake for 25-30 minutes or until the top is golden brown and bubbling.
9. Cool: Remove from the oven and allow to cool for 10-15 minutes before serving. This resting time helps the sauce thicken up slightly for better serving.
10. Serve: Dish out and enjoy your delightful Baked Macaroni and Cheese!