Bake butter in 9-inch square baking dish in 2 min. or until melted. Remove dish from oven; brush butter onto bottom and sides of dish.
Beat eggs with mixer in large bowl. Add flour, milk and baking powder; mix until blended. Stir in spinach, cheeses and onion. Spoon into prepared dish.
Bake 35 min. Let stand 15 min. before cutting into squares to serve.
Looking for something to serve as part of your next brunch menu? This Spinach Cheese Squares recipe makes enough for 12 servings.
Calories From Fat
% Daily Value*
Total Fat 13g
Saturated Fat 7g
Trans Fat 0.5g
Total Carbohydrates 13g
Dietary Fibers 2g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.