Sweet and Tangy Sour Cream Banana Bread

Sour cream gives enough tangy bite to take the edge off this banana bread's sweetness. Dusting the baking pans with cinnamon-sugar gives these small four loaves a gentle spice undertone.

Prep Time:
15 mins
Cook Time:
1 hrs
Total Time:
1 hrs 15 mins
32 servings


  • ¼ cup sucralose sugar substitute (such as Splenda® Granulated)

  • 1 teaspoon ground cinnamon

  • ¾ cup light margarine (such as Smart Balance® Light)

  • 1 ½ cups sugar and sucralose blend for baking (such as SPLENDA® Sugar Blend)

  • 6 very ripe bananas, mashed

  • ¾ cup egg substitute

  • 1 (16 ounce) container reduced-fat sour cream

  • 2 teaspoons vanilla extract

  • 2 teaspoons ground cinnamon

  • 4 ½ cups white whole wheat flour (such as King Arthur®)

  • 1 scoop vanilla protein powder (Optional)

  • 1 tablespoon baking soda

  • ½ teaspoon salt substitute (such as Morton® Lite Salt™ Mixture)

  • 1 cup chopped walnuts (Optional)


  1. Preheat oven to 300 degrees F (150 degrees C). Grease four 7x3-inch loaf pans.

  2. Mix 1/4 cup sucralose sugar substitute and 1 teaspoon cinnamon together in a bowl. Dust the prepared loaf pans with sugar-cinnamon mixture.

  3. Beat margarine and 1 1/2 cups sucralose blend for baking together in a bowl using an electric mixer until smooth and creamy. Mix bananas, egg substitute, sour cream, vanilla extract, and 2 teaspoons cinnamon into creamed margarine mixture until smooth. Stir flour, protein powder, baking soda, and salt substitute into banana mixture until batter is just mixed; fold in walnuts. Pour batter into the prepared loaf pans.

  4. Bake in the preheated oven until a toothpick inserted in the center of a loaf comes out clean, about 1 hour.

Cook's Note:

The vanilla protein powder can be either whey- or soy-based.

Ideal(R) brand sugar substitute can also be used in place of the Splenda(R).

Nutrition Facts (per serving)

205 Calories
6g Fat
31g Carbs
5g Protein
Nutrition Facts
Servings Per Recipe 32
Calories 205
% Daily Value *
Total Fat 6g 8%
Saturated Fat 2g 9%
Cholesterol 6mg 2%
Sodium 159mg 7%
Total Carbohydrate 31g 11%
Dietary Fiber 3g 11%
Total Sugars 13g
Protein 5g
Vitamin C 2mg 11%
Calcium 25mg 2%
Iron 1mg 6%
Potassium 253mg 5%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.