Topper Corn Bread
["1 c. chopped onion", "1 Tbsp. butter", "1 pkg. corn muffin mix or cornbread mix", "1 c. shredded sharp process American cheese", "1 tsp. celery seed"]
["Cook onion in butter just until tender, but not brown. Prepare the mix according to package directions.", "Spread batter on greased 10 x 6 x 1 1/2-inch baking dish.", "Sprinkle cheese evenly over batter; dot onion-butter mixture over all.", "Sprinkle with celery seed.", "Bake at 375\u00b0 about 20 minutes.", "Serve at once."]
["onion", "butter", "corn muffin", "American cheese", "celery"]