1 lb. hamburger
1/2 chopped onion
1 env. taco seasoning
1 can Pillsbury crescent rolls
1 c. sour cream
1 c. grated Cheddar cheese

Line 8 inch square pan with half the crescent rolls. Brown hamburger and onion. Add taco seasoning as directed on package. Spread over crescent rolls. Cover hamburger mixture with sour cream and a layer of cheese. Cover with remaining half of crescent rolls. Bake at 350 degrees for 20 to 25 minutes.