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.

Nutrition per serving