Sour Cream Cornbread
["1 c. all-purpose flour", "1 c. yellow cornmeal", "4 Tbsp. sugar", "2 tsp. baking powder", "1 tsp. salt", "1 egg, beaten", "1/3 c. milk", "4 Tbsp. margarine, melted", "1 c. sour cream", "vegetable cooking spray", "1/2 tsp. baking soda"]
["Preheat oven to 400\u00b0.", "In large bowl, combine flour, meal, sugar, baking powder, baking soda and salt.", "In medium bowl, beat egg, milk and margarine.", "Add egg mixture and sour cream to flour. Stir until blended.", "Pour into baking pan and bake 20 to 25 minutes."]
["flour", "yellow cornmeal", "sugar", "baking powder", "salt", "egg", "milk", "margarine", "sour cream", "vegetable cooking spray", "baking soda"]