Becky'S Spinach Squares
["4 Tbsp. butter", "3 eggs", "1 c. flour", "1 c. milk", "3/4 tsp. salt", "1 tsp. baking powder", "1 lb. grated mild cheese", "2 pkg. spinach", "1 small onion"]
["Melt butter in 13 x 9-inch glass pan.", "Beat eggs well.", "Add flour, milk, salt and baking powder.", "Mix.", "Add cheese and finely chopped onion.", "Squeeze all water out of spinach and add.", "Bake at 350\u00b0 for 35 minutes.", "Wait until completely cooled to cut."]
["butter", "eggs", "flour", "milk", "salt", "baking powder", "mild cheese", "spinach", "onion"]