For the best flavor, use very ripe bananas – the spottier, the better! To toast the walnuts, spread them on a baking sheet and bake at 350°F (175°C) for 5-7 minutes, or until fragrant. Let cool before chopping. Don't overmix the dough, or the cookies will be tough. For a richer flavor, substitute half of the margarine with unsalted butter in the cookie dough. Store unfrosted cookies in an airtight container at room temperature for up to 3 days, or in the freezer for up to 2 months. Frosting can be stored in the refrigerator for up to a week. If you don't have walnuts, pecans or macadamia nuts are also delicious.
Grandma's Banana Cookies
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PREP TIME30 mins
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COOK TIME25 mins
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TOTAL TIME1 hrs 5 mins
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SERVING40 People
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VIEWS16
These Banana Cookies are more than just a treat; they're a warm hug in every bite. Imagine a symphony of ripe bananas, toasted walnuts, and a luscious brown sugar frosting melting in your mouth. Perfect for any occasion, these cookies are sure to become a family favorite.
Ingridients
Adjust Servings
Nutrition
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Carbohydrate29 g
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Cholesterol17 mg
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Fiber1 g
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Protein2 g
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Saturated Fat3 g
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Sodium165 mg
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Fat8 g
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Unsaturated Fat0 g
DIRECTIONS
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01 Step
Recipe View Preheat oven to 350°F (175°C). Grease a cookie sheet. (5 minutes)
02 Step
Recipe View In a large bowl, whisk together flour, baking powder, and salt. (3 minutes)
03 Step
Recipe View In a separate large bowl, stir baking soda into sour cream. Add mashed banana and vanilla extract. Set aside. (2 minutes)
04 Step
Recipe View In a large bowl, cream together margarine, butter, granulated sugar, and brown sugar with an electric mixer until light and fluffy. Beat in eggs one at a time. (5 minutes)
05 Step
Recipe View Gradually mix in the banana-sour cream mixture until just combined. Do not overmix. (3 minutes)
06 Step
Recipe View Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Stir in toasted walnuts. (5 minutes)
07 Step
Recipe View Drop by rounded tablespoons onto the prepared cookie sheet, leaving some space between cookies. (5 minutes)
08 Step
Recipe View Bake for 10-12 minutes, or until the bottoms are light golden brown and the cookies are set but still slightly soft to the touch. (12 minutes)
09 Step
Recipe View Remove cookies to a wire rack to cool completely. (2 minutes)
10 Step
Recipe View While the cookies are cooling, prepare the frosting: In a saucepan over medium-low heat, melt butter. (3 minutes)
11 Step
Recipe View Stir in brown sugar and reduce heat to low. Stir constantly and bring to a gentle boil. Boil, stirring constantly, for 2 minutes. Remove from heat. (5 minutes)
12 Step
Recipe View Stir in 1/4 cup milk and bring to a boil again. Remove from heat and let cool slightly for 10-15 minutes. (15 minutes)
13 Step
Recipe View Gradually stir in powdered sugar until the frosting reaches your desired consistency. If frosting becomes too thick, add a little more milk, a teaspoon at a time. (5 minutes)
14 Step
Recipe View Once the cookies are completely cooled, spread the frosting evenly over the top. Let the frosting set before serving. (5 minutes)
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Nathaniel Abernathy
Jun 5, 2025The frosting was a little too sweet for my taste, so I reduced the amount of powdered sugar.
Hipolito Williamson
Jun 1, 2025My family loved these cookies. They were gone in a day!
Marilou Beier
May 29, 2025These cookies are amazing! The frosting is so rich and creamy.
Hilario Herman
May 15, 2025I added a pinch of cinnamon to the dough and it gave them a lovely warm spice.