Spinach Brownies
["1 c. flour", "1 tsp. salt", "1 tsp. baking powder", "10 oz. Cheddar cheese, shredded", "10 oz. cooked spinach, drained well", "1 stick margarine, melted", "2 eggs, beaten", "1 c. onion, finely chopped", "1 c. milk"]
["Preheat oven to 350\u00b0.", "Mix all ingredients together.", "Place in greased 9-inch square pan.\tBake for 30 minutes.", "Cut into squares and serve.\tGood hot or cold.", "Makes 8 servings."]
["flour", "salt", "baking powder", "Cheddar cheese", "cooked spinach", "margarine", "eggs", "onion", "milk"]