Moist Banana Walnut Cake Made in a Slow Cooker

Slow Cooker Banana-Walnut CakeLately I’ve been using my slow cooker more and more. I’ve made many tasty dishes, but this time I wanted to try something different: banana cake. Banana bread is a favorite of mine, so I decided to see how it would turn out cooked slowly in the crockpot.

This was my first time making banana cake in a slow cooker and I was pleasantly surprised. I hadn’t realized you could bake a cake in a slow cooker, and the result was impressively moist — even more so than my usual oven-baked version. Because the slow cooker traps steam, the crumb stays very tender.

Another advantage is that the slow cooker frees up oven space. While the cake cooks, you can use the oven to prepare the rest of your meal. My family loved this slow cooker banana-walnut cake, and I’ll definitely make it again.

Slow Cooker Banana-Walnut Cake

Cooking Tips for a Perfect Slow Cooker Banana-Walnut Cake

For best results, use very ripe bananas — they add natural sweetness and extra moisture. Mash the bananas well so they incorporate evenly into the batter. Mix the batter only until the ingredients are combined; overmixing can create a dense cake instead of a light, tender crumb. If the top of the cake starts to brown too quickly, place a paper towel under the lid to absorb excess moisture and prevent over-darkening. Slow cookers vary, so start checking for doneness around the two-hour mark. Insert a toothpick or skewer into the center — if it comes out clean, the cake is ready.

Serving Suggestions and Variations

This banana-walnut cake is delicious served warm or at room temperature. For dessert, top it with a scoop of vanilla ice cream or a dollop of whipped cream and a drizzle of caramel sauce. For breakfast, serve slices warm with a dusting of cinnamon and a side of yogurt. To vary the recipe, stir in chocolate chips, raisins, or dried cranberries. For a nut-free version, swap walnuts for sunflower or pumpkin seeds. You can also experiment with spices such as nutmeg or ginger for a slightly different flavor profile.

Frequently Asked Questions

What can I substitute for walnuts?

If you prefer not to use walnuts or need a nut-free option, use chocolate chips, sunflower seeds, or pumpkin seeds. These alternatives still add texture and flavor.

How should I store leftover cake?

Once cooled, store the cake in an airtight container at room temperature for up to three days. For longer storage, slice and freeze portions in a zip-top bag for up to a month.

Can I make this cake ahead of time?

Yes. You can prepare the batter and refrigerate it for up to a day before cooking in the slow cooker. Allow the batter to come closer to room temperature before cooking for more even results.

What toppings go well with banana-walnut cake?

Try cream cheese frosting, a dusting of confectioners’ sugar, fresh banana slices, or a scoop of vanilla ice cream. A sprinkle of cinnamon also complements the banana flavor nicely.

How do I prevent the cake from becoming too dense?

Mix gently and only until the ingredients are combined. Overmixing develops gluten and can make the cake heavy. Use ripe bananas and fold in the dry ingredients gently.

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Slow Cooker Banana-Walnut Cake

Liza A

A moist, flavorful banana-walnut cake made easily in the slow cooker, with the natural sweetness of ripe bananas and a touch of pineapple for extra moisture.
Prep Time
15 mins
Cook Time
2 hrs 15 mins
Total Time
2 hrs 30 mins
Course Dessert
Cuisine American
Servings 8 servings
Calories 250 kcal

Ingredients

  • 1 cup sugar
  • 1/3 cup vegetable oil
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 3 overripe bananas, slightly mashed
  • 1 1/4 cup all-purpose flour
  • 1 teaspoon baking soda
  • 1/3 cup canned crushed pineapple, drained
  • 1/3 cup finely chopped walnuts

Instructions

  1. Line the bottom of a 3.5‑quart slow cooker with parchment paper. Lightly coat the paper and sides with cooking spray.
  2. In a medium bowl, combine sugar and oil. Beat about 1 minute until creamy. Add eggs and vanilla and beat until combined. Add mashed bananas and beat until smooth. Stir in flour, baking soda, and 1/2 teaspoon salt just until blended. Fold in drained pineapple and walnuts. Spread the batter evenly in the slow cooker.
  3. Cover and cook on high 2 1/4 to 2 1/2 hours, or until the cake is set and a wooden toothpick inserted in the center comes out clean.
  4. Turn off the cooker and uncover. Let the cake stand 15 minutes, then transfer to a rack to cool. Wrap tightly in plastic and chill 8 hours before serving, if desired. Sprinkle with confectioners’ sugar before serving, if you like.

Notes

Recipe source: Prevention Guide: Slow Cooker So Easy!

Nutrition

Calories: 250 kcal
Carbohydrates: 36 g
Protein: 3 g
Fat: 11 g
Saturated Fat: 1 g
Cholesterol: 30 mg
Sodium: 150 mg
Fiber: 1 g
Sugar: 15 g
Keyword banana cake, easy dessert, overripe bananas, slow cooker, walnut cake
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