1 med. onion, chopped
1 1/4 lbs. ground beef
2 tbsp. butter
1 (3 oz.) pkg. cream cheese, room temperature
1 (6 oz.) pkg. noodles, cooked and drained
1 1/2 c. tomato juice
1 (4 oz.) can mushrooms, drained
1 tsp. chili powder

Brown onion and beef in butter. Blend cheese with hot noodles. Add remaining ingredients. Combine meat mixture with noodles. Turn into 13 x 9 inch pan and bake at 350 degrees for 30 minutes.