Meat and Potato Dinner

1 1/2 lbs. ground beef
1 medium onion, chopped
2 Tbls. Worcestershire sauce
1 tsp. salt
1/2 tsp. pepper
8 medium potatoes, sliced
1 pkg. (16 oz.) frozen peas, thawed

Cheese Sauce:
1/4 cup butter, cubed
1/3 cup all-purpose flour
1/2 tsp. salt
1/4 tsp. pepper
2 cups milk
4 oz. processed cheese (Velveeta), cubed

In a large skillet, cook the beef and onion over medium heat until the beef is no longer pink, drain. Stir in Worcestershire sauce, salt and pepper. In a greased 13x9 inch baking dish, layer half of the potatoes, all of the meat mixture and peas, add remaining potatoes on top and set aside. In a large saucepan, melt butter over medium heat. Stir in flour, salt and pepper until smooth. Gradually stir in milk. Bring to a boil; cook and stir for about 2 minutes or until thickened. Stir in cheese until melted. Pour over potatoes. Cover and bake at 350 degrees for 1 1/2 hours or until the potatoes are tender. Enjoy!