Ingredients
Banana Bars
2 cups all-purpose flour (250 grams)
1/2 teaspoon cinnamon
1 teaspoon baking soda
1/2 teaspoon salt
1/2 cup unsalted butter (112 grams), softened
1 cup granulated sugar (200 grams)
1/2 cup brown sugar (105 grams)
2 large eggs
2 teaspoons vanilla extract
1/2 cup sour cream (120 ml)
1 1/2 cups mashed ripe bananas
Cream Cheese Frosting
1/2 cup unsalted butter (112 grams), softened
8 ounces full-fat brick-style cream cheese (226 grams)
3–4 cups powdered sugar (330–440 grams), sifted
1/2 teaspoon cinnamon (optional)
1 teaspoon vanilla extract
1/4 teaspoon salt
1–2 tablespoons heavy cream, if needed
Instructions
1. Preheat oven to 350°F and grease a 10×15 inch jelly roll pan.
2. Whisk flour, cinnamon, baking soda, and salt in a bowl.
3. Cream butter, granulated sugar, and brown sugar until smooth.
4. Add eggs and vanilla and mix until fully combined.
5. Mix in sour cream and mashed bananas.
6. Gradually add dry ingredients and mix gently until just combined.
7. Spread batter evenly in pan and bake 24–28 minutes until golden and a toothpick comes out clean.
8. Cool completely before frosting.
9. Beat butter until smooth, then add cream cheese and mix well.
10. Add powdered sugar, cinnamon, vanilla, and salt gradually.
11. Adjust thickness with heavy cream if needed.
12. Spread frosting over cooled bars and chill before slicing.
Notes
Use full-fat brick-style cream cheese for stable frosting.
Measure flour correctly by spooning and leveling.
Do not overmix batter.
Store covered in refrigerator up to 4 days.
- Prep Time: 30 minutes
- Cook Time: 25 minutes
- Category: Brownies and Bars
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Nutrition
- Serving Size: 1 bar
- Calories: 322
- Sugar: 36g
- Sodium: 189mg
- Fat: 14g
- Saturated Fat: 8g
- Unsaturated Fat: 5g
- Trans Fat: 0.4g
- Carbohydrates: 48g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 55mg