Mom's Favorite Baked Mac and Cheese

Ingredients

• 2 tablespoons butter
• 0.25 cups finely chopped onion
• 2 tablespoons all-purpose flour
• 2 cups milk
• 0.75 teaspoons salt
• 0.5 teaspoons dry mustard
• 0.25 teaspoons ground black pepper
• 1 , 8 ounce
• 2 cups shredded sharp Cheddar cheese
• 1 , 8 ounce

Instructions

1. 1

   Preheat the oven to 350 degrees F (175 degrees C).

2. 2

   Melt butter in a medium saucepan over medium heat. Sauté onion for 2 minutes. Stir in flour and cook for 1 minute, stirring constantly.

3. 3

   Then stir in milk, salt, mustard, and pepper. Cook, stirring frequently, until mixture boils and thickens.

4. 4

   Meanwhile, bring a pot of lightly salted water to a boil. Add macaroni and cook until al dente, 8 to 10 minutes; drain.

5. 5

   Add Cheddar and American cheeses to milk mixture; stir until cheese melts.

6. 6

   Combine cheese sauce and macaroni in a 2-quart baking dish; mix well.

7. 7

   Bake in preheated oven until hot and bubbly, about 30 minutes. Let cool 10 minutes before serving.