There’s something undeniably comforting about banana bread, especially when it’s transformed into a luscious cake that’s been cooked to perfection in a slow cooker. This Slow Cooker Banana Bread Cake with Brown Sugar Sauce is a delightful twist on the classic recipe, providing an incredibly moist texture, rich flavors, and the ease of preparing it in your trusty slow cooker. Imagine coming home after a long day to the sweet aroma of banana bread wafting through your kitchen—it’s pure bliss!
Let’s dive into the details of this scrumptious cake that’s perfect for breakfast, dessert, or anytime you crave a sweet treat.
Why It’s My Go-To

I’ve made countless versions of banana bread over the years, but this slow cooker variation quickly became a favorite. The slow cooking method yields an incredibly moist cake that’s practically bursting with banana flavor. Plus, the addition of a warm brown sugar sauce takes it to a whole new level of indulgence! Serve it warm with a scoop of ice cream, or enjoy it plain with a cup of coffee; either way, you’re in for a treat.
What We’re Using
Let’s break down the ingredients that make this cake so irresistible:
- 2 large eggs: These provide structure and moisture to the cake.
- 1 cup canola or vegetable oil: This keeps the cake moist and tender.
- 1 cup light brown sugar, packed: Adds sweetness and a hint of caramel flavor.
- 1 cup granulated sugar: Sweetens the cake and balances the flavors.
- 2 teaspoons vanilla extract: Enhances the overall flavor profile.
- 1 ½ cups mashed ripe bananas: The star ingredient—use about 3 large bananas.
- 2 cups all-purpose flour: Forms the base of the cake.
- 1 teaspoon baking powder: Helps the cake rise.
- ½ teaspoon baking soda: Provides additional leavening.
- ½ teaspoon salt: Balances sweetness and enhances flavors.
- 1 teaspoon cinnamon (optional): Adds warmth and spice, but can be omitted if preferred.
- 1 cup boiling water: Helps to create a moist batter.
Recommended Tools
To make this Slow Cooker Banana Bread Cake with Brown Sugar Sauce, you’ll need a few essential tools:
- Slow Cooker: A standard 6-quart slow cooker works best for this recipe.
- Mixing Bowls: For combining your wet and dry ingredients.
- Measuring Cups and Spoons: Accurate measurements are key to a perfect cake.
- Rubber Spatula: Helps to mix the batter and scrape down the sides of the bowl.
- Whisk: Perfect for combining eggs and sugar until smooth.
Stepwise Method: Slow Cooker Banana Bread Cake with Brown Sugar Sauce

Step 1: Prepare the Slow Cooker
Start by greasing the inside of your slow cooker with a little oil or cooking spray. This will help prevent the cake from sticking as it cooks.
Step 2: Mix Wet Ingredients
In a large mixing bowl, whisk together the 2 large eggs, 1 cup canola or vegetable oil, 1 cup light brown sugar, 1 cup granulated sugar, 2 teaspoons vanilla extract, and 1 ½ cups mashed ripe bananas until smooth and well combined.
Step 3: Combine Dry Ingredients
In another bowl, sift together the 2 cups all-purpose flour, 1 teaspoon baking powder, ½ teaspoon baking soda, ½ teaspoon salt, and 1 teaspoon cinnamon (if using). This ensures that the leavening agents are evenly distributed.
Step 4: Combine Wet and Dry Mixtures
Gradually add the dry ingredients to the wet mixture, stirring gently until just combined. Do not overmix; a few lumps are okay.
Step 5: Add Boiling Water
Carefully stir in the 1 cup boiling water. The batter will be quite thin, but that’s what makes the cake moist!
Step 6: Pour into Slow Cooker
Pour the batter into the prepared slow cooker. Smooth the top with a spatula.
Step 7: Cook on Low
Cover and cook on the low setting for about 3 to 4 hours, or until a toothpick inserted in the center comes out clean. Cooking times may vary based on your slow cooker model.
Step 8: Make the Brown Sugar Sauce
While the cake is cooking, prepare the brown sugar sauce. In a small saucepan, combine 1 cup light brown sugar and a splash of water. Heat over medium, stirring until the sugar dissolves and the mixture thickens slightly. Set aside.
Step 9: Serve and Enjoy!
Once the cake is done, turn off the slow cooker and let it cool for a few minutes. Serve warm, drizzled with the brown sugar sauce. Enjoy every bite of your homemade Slow Cooker Banana Bread Cake with Brown Sugar Sauce!
Better-for-You Options

If you’re looking to make some healthier swaps, consider these options:
- Oil Alternatives: Replace canola or vegetable oil with applesauce for a lower-fat version.
- Sugar Substitutes: Use coconut sugar or a natural sweetener like stevia for a lower-calorie option.
- Flour Alternatives: Substitute half of the all-purpose flour with whole wheat flour for added fiber.
- Add-ins: Fold in nuts or dark chocolate chips for added nutrition and flavor.
Chef’s Notes
- Be sure to use very ripe bananas for the best flavor and sweetness.
- This cake freezes beautifully! Just wrap it tightly and store it in an airtight container.
- If you prefer a stronger cinnamon flavor, feel free to increase the amount to your taste.
- Serve it warm or at room temperature—both are delicious!
Prep Ahead & Store
You can prepare the batter ahead of time and store it in the refrigerator for up to 24 hours before cooking. Just give it a good stir before pouring it into the slow cooker. Once the cake is cooked, store leftovers in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week.
Helpful Q&A
Can I use frozen bananas for this recipe?
Absolutely! Thaw and drain the excess liquid from frozen bananas before mashing them for the best results.
Can I double the recipe for a larger crowd?
Yes! Just be sure to use a larger slow cooker and adjust the cooking time as needed. It may take a little longer to cook through.
What can I substitute for the eggs?
You can use flax eggs or applesauce as an egg substitute. For each egg, mix 1 tablespoon of flaxseed meal with 2.5 tablespoons of water and let it sit for a few minutes to thicken.
Can I make this in the oven instead?
Yes! Preheat your oven to 350°F (175°C) and pour the batter into a greased 9×13 inch pan. Bake for about 25-30 minutes, or until a toothpick inserted comes out clean.
Desserts to Finish
If you loved this recipe, you might also enjoy:
- Classic Chocolate Chip Cookies
- Lemon Butter Cake
- Vegan Gluten-Free Brownies
- Peanut Butter Banana Bread
That’s a Wrap
This Slow Cooker Banana Bread Cake with Brown Sugar Sauce is a simple yet extraordinary dessert that everyone will love. Whether you’re serving it for breakfast, dessert, or a special occasion, it’s bound to impress. The slow cooker makes it incredibly easy, so you can focus on enjoying the delicious results.
Now, gather your ingredients, set up your slow cooker, and treat yourself to this delightful cake. You won’t regret it!

Slow Cooker Banana Bread Cake with Brown Sugar Sauce
Equipment
- Slow Cooker
- Mixing Bowls
- Measuring cups and spoons
- Rubber spatula
- Whisk
- Small saucepan
Ingredients
- 2 large eggs
- 1 cup canola or vegetable oil
- 1 cup light brown sugar packed
- 1 cup granulated sugar
- 2 teaspoons vanilla extract
- 1 ½ cups mashed ripe bananas about 3 large bananas
- 2 cups all-purpose flour
- 1 teaspoon baking powder
- ½ teaspoon baking soda
- ½ teaspoon salt
- 1 teaspoon cinnamon optional
- 1 cup boiling water
For the Brown Sugar Sauce:
- 1 cup light brown sugar
- a splash water
Instructions
Preparation
- Grease the inside of your slow cooker with a little oil or cooking spray to prevent sticking.
Mixing Batter
- In a large mixing bowl, whisk together the 2 large eggs, 1 cup canola or vegetable oil, 1 cup light brown sugar, 1 cup granulated sugar, 2 teaspoons vanilla extract, and 1 ½ cups mashed ripe bananas until smooth and well combined.
- In another bowl, sift together 2 cups all-purpose flour, 1 teaspoon baking powder, ½ teaspoon baking soda, ½ teaspoon salt, and 1 teaspoon cinnamon (if using) to evenly distribute leavening agents.
- Gradually add the dry ingredients to the wet mixture, stirring gently until just combined. Do not overmix; a few lumps are okay.
- Carefully stir in 1 cup boiling water. The batter will be quite thin, but that’s what makes the cake moist!
Cooking
- Pour the batter into the prepared slow cooker. Smooth the top with a spatula.
- Cover and cook on the low setting for about 3 to 4 hours, or until a toothpick inserted in the center comes out clean. Cooking times may vary based on your slow cooker model.
Brown Sugar Sauce
- While the cake is cooking, prepare the brown sugar sauce. In a small saucepan, combine 1 cup light brown sugar and a splash of water. Heat over medium, stirring until the sugar dissolves and the mixture thickens slightly. Set aside.
Serving
- Once the cake is done, turn off the slow cooker and let it cool for a few minutes. Serve warm, drizzled with the brown sugar sauce.
Notes
- Use very ripe bananas for the best flavor and sweetness.
- This cake freezes beautifully; wrap tightly and store in an airtight container.
- Adjust cinnamon amount to your preference for a stronger spice flavor.
- Serve warm or at room temperature for delicious results.
