Ingredients

3 tablespoons Butter

1 Onion [sliced thinly]

1 cup Penne Pasta [uncooked]

2 tablespoons Flour

1 1/2 cups Milk

1/4 teaspoon Salt

1/4 teaspoon Pepper

1 cup Gruyere Cheese [shredded]

1/4 cup Parmesan Cheese [grated]

1 cup Chicken [cooked, shredded]

3 slices Bacon [cooked, crumbled]

2/3 cup Bread Crumbs

1 tablespoon Butter [melted]

Preparation

  1. Heat oven to 425°F. In 7-inch cast-iron skillet, heat 1 tablespoon of the butter over medium heat. Add onion; cook 8 to 10 minutes, stirring occasionally, until onions are browned. Remove from heat.

  2. Meanwhile, cook pasta as directed on package to al dente; drain.

  3. In 2-quart saucepan, heat 2 tablespoons butter over medium heat. Add flour; cook and stir 1 minute. Beat in milk, salt and pepper with whisk; heat to boiling. Reduce heat to medium-low; cook and stir 1 to 2 minutes or until thickened. Remove from heat; beat in Gruyère and Parmesan cheeses. Add cooked pasta, chicken, bacon and browned onions; gently stir to combine. Transfer to same 7-inch cast-iron skillet.

  4. In small bowl, mix bread crumbs and 1 tablespoon melted butter. Sprinkle over top of pasta mixture. Bake 14 to 17 minutes or until bubbly and golden brown.