Recipes and Cooking Sour Cream Pumpkin Bars Prep a homemade browned butter frosting (it's easy -- you only need four ingredients) to top off these moist pumpkin bars. By BHG Test Kitchen BHG Test Kitchen The Better Homes & Gardens Test Kitchen has been in continuous operation for nearly 100 years, developing and testing practical, reliable recipes that readers can enjoy at home. The Test Kitchen team includes culinary specialists, food stylists, registered and licensed nutritionists, and other experts with Bachelor of Science degrees in food science, food and nutrition, or culinary arts. Together, the team tests more than 2,500 recipes, produces more than 2,500 food images, and creates more than 1,000 food videos each year in the state-of-the-art test kitchen. Learn about BHG's Editorial Process Updated on September 15, 2020 Print Share Share Tweet Pin Email Photo: Blaine Moats Prep Time: 25 mins Bake Time: 25 mins Total Time: 25 mins Servings: 48 Jump to Nutrition Facts Ingredients ½ cup butter, softened 1 ⅓ cup sugar 1 ½ teaspoon baking powder ¼ teaspoon baking soda ¼ teaspoon salt 2 eggs 1 cup canned pumpkin ½ cup dairy sour cream ¼ cup milk 1 teaspoon vanilla 1 ½ cup all-purpose flour ½ cup whole wheat flour 1 cup chopped walnuts or pecans Chopped walnuts or pecans (optional) Browned Butter Frosting ½ cup butter 3 cup powdered sugar 2 tablespoon milk 1 teaspoon vanilla Directions Grease a 15x10x1-inch baking pan; set aside. In a large mixing bowl, beat the butter with an electric mixer for 30 seconds. Beat in sugar, baking powder, baking soda and salt until combined. Add eggs, pumpkin, sour cream, milk, and vanilla; beat until combined. Add all-purpose and whole wheat flours; beat until combined. Stir in 1 cup nuts. Spread mixture evenly into prepared baking pan. Bake in a 350 degrees F oven about 25 minutes or until a wooden toothpick inserted near the center comes out clean. Cool in pan on wire rack. Prepare Browned Butter Frosting; spread over cooled bars. If you like, sprinkle with additional nuts. Cut into bars. Makes 48 bars. Browned Butter Frosting In a small saucepan, heat butter over medium-low heat until melted. Continue heating until the butter turns a light brown. Remove from heat and transfer butter to a medium mixing bowl. Add powdered sugar, milk and vanilla. Beat with an electric mixer until combined. Beat in additional milk, 1 teaspoon at a time, to make a spreadable frosting. Use immediately. Makes about 1 cup. Print Nutrition Facts (per serving) 130 Calories 6g Fat 18g Carbs 1g Protein Show Full Nutrition Label Hide Full Nutrition Label Nutrition Facts Servings Per Recipe 48 Calories 130 % Daily Value * Total Fat 6g 8% Saturated Fat 3g 15% Cholesterol 20mg 7% Sodium 63mg 3% Total Carbohydrate 18g 7% Protein 1g Calcium 20.2mg 2% Iron 0.4mg 2% *The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.