burger fries pot pie

Burger and Fries Pot Pie via betty crocker
1 1/2lb lean (at least 80%) ground beef
1 large onion, chopped (about 1 c)
2 T flour
1 can (14.5 oz) diced tomatoes, undrained
1c shredded Cheddar cheese (4 oz)
2 c frozen crispy French-fried potatoes (from 20-oz bag) i probably use more than 2 c

 450°F. In skillet, cook beef and onion over med-high, 8 min, stir occasionally, til beef is thoroughly cooked; drain well. Sprinkle flour over beef mix. Cook 1 min, stir constantly. Stir in tomatoes; heat to boiling. Remove from heat. In ungreased 1 1/2-qt casserole (i may have used 9x13), spread beef mix. Sprinkle w cheese. Arrange potatoes evenly in single layer on top. Bake uncovered 20 min til potatoes  golden brown. Let stand 5 min before serving.