4 tbsp. (1/2 stick) butter
3 eggs
1 cup all-purpose flour
1 cup milk
1 tsp. salt
1 tbsp. baking powder
16 oz. grated cheddar cheese
20 oz. frozen, chopped spinach
1 tbsp. chopped onion

Preheat oven to 350°F.

Melt butter in 13x9-inch baking pan. Beat eggs in bowl. Add flour, milk. salt, and baking powder. Mix well. Add cheddar cheese, spinach, and onion. Mix well, spoon into pan and level off.

Sprinkle with seasoned salt, to taste. Bake for about 30 minutes or til browned on edges and set.

Cool for 45 minutes, then cut into squares.