Spinach Bars - cooking recipe

Ingredients

1/2 stick butter
3 eggs
1 c. flour
1 c. milk
1 tsp. salt
1 tsp. baking powder
1 small onion, chopped
1 lb. grated Cheddar
1 (10 oz.) box frozen chopped spinach, thawed and drained

Preparation

Melt butter in a 13 x 9 x 2-inch pan.
Beat eggs, add other ingredients.
Pour over melted butter.
Bake 35 minutes at 350\u00b0. Cool before cutting into bars.