An Moist Banana Cake with Brown Sugar Cinnamon Streusel
Most of the time, when bananas turned brown on the counter, my mom would make banana bread. But now and then, she would surprise us with something a little more special — banana crumb cake.
This cake is soft, moist, and slightly rich, with warm cinnamon tucked into every bite. The buttery brown sugar crumb topping melts into the cake as it bakes, creating little pockets of sweetness throughout. And the simple vanilla glaze drizzled over the warm cake makes it feel just a little extra special.
It’s the kind of cake that feels right at home on the kitchen table with a cup of coffee in the afternoon, or served as a sweet treat after supper. It’s simple, comforting, and made from ingredients most of us already have in the pantry.
If you have ripe bananas sitting on the counter, this is a wonderful way to turn them into something truly cozy.
Ingredients:
8 Tbs. cold butter, cubed
1 c. flour
1 c. light brown sugar
1 tsp. cinnamon
Banana Cake:
4 medium ripe bananas
8 Tbs. butter, melted
1 3/4 c.sugar
2 eggs
1 tsp. vanilla extract
2 c. flour
1 Tbs. baking powder
1 tsp. salt
1/2 to 1 tsp. cinnamon
1 c. milk
Glaze:
1 c. powdered sugar
1 Tbs. milk
1 tsp. vanilla extract
Directions:
Preheat oven to 350°F. Spray or butter the bottom of a 9" x 13" cake pan.
In a large bowl, combine cold butter, flour, brown sugar, and cinnamon. Using a pastry cutter or two knives, cut the butter into the dry ingredients until the mixture looks crumbly. Set the crumb topping aside as you make the cake.
In a large bowl, mash the bananas until smooth.
Add the melted butter, sugar, eggs, and vanilla. Whisk until thoroughly combined.
In a separate bowl, whisk together flour, baking powder, salt, and cinnamon.
Add half of the dry ingredients to the banana mixture. Mix just until combined. Stir in half of the milk. Repeat with remaining flour and milk, mixing gently until incorporated. Do not overmix.
Pour half of the cake batter into the prepared pan.
Sprinkle half of the crumb mixture over the batter. Repeat with remaining batter and crumb topping.
Bake for 45–55 minutes, or until a toothpick inserted in the center comes out clean.
Allow the cake to cool slightly before adding glaze.
Make the Glaze:
In a small bowl, whisk powdered sugar, milk, and vanilla until smooth. Drizzle over the warm cake.
Serve and enjoy.
Make the Crumb Topping:
In a large bowl, combine cold butter, flour, brown sugar, and cinnamon. Using a pastry cutter or two knives, cut the butter into the dry ingredients until the mixture looks crumbly. Set aside.
Make the Cake:
In a large bowl, mash the bananas until smooth.
Add the melted butter, sugar, eggs, and vanilla. Whisk until thoroughly combined.
In a separate bowl, whisk together flour, baking powder, salt, and cinnamon.
Add half of the dry ingredients to the banana mixture. Mix just until combined. Stir in half of the milk. Repeat with remaining flour and milk, mixing gently until incorporated. Do not overmix.
Pour half of the cake batter into the prepared pan.
Sprinkle half of the crumb mixture over the batter. Repeat with remaining batter and crumb topping.
Bake for 45–55 minutes, or until a toothpick inserted in the center comes out clean.
Allow the cake to cool slightly before adding glaze.
Make the Glaze:
In a small bowl, whisk powdered sugar, milk, and vanilla until smooth. Drizzle over the warm cake.
Serve and enjoy.
Tips for Best Success:
- Use very ripe bananas. The darker and more speckled they are, the sweeter and more flavorful your cake will be.
- Do not overmix the batter. Mix just until the ingredients are combined. Overmixing can make the cake dense instead of soft and tender.
- Keep the crumb butter cold. Cold butter creates the best crumb texture. If it gets too soft, place it in the refrigerator for a few minutes before mixing.
- Layer evenly. Spreading the batter gently and evenly helps the crumb topping distribute nicely throughout the cake.
- Check early for doneness. Ovens vary. Start checking at 45 minutes. A toothpick inserted in the center should come out clean or with just a few moist crumbs.
Variations and Substitutions:
- Stir ½ cup chopped walnuts or pecans into the batter or sprinkle over the crumb topping.
- Fold in ½ to 1 cup semi-sweet chocolate chips for a chocolate banana version.
- Replace half the granulated sugar with brown sugar for a deeper caramel flavor.
- The cake is delicious on its own if you prefer something less sweet.
- Mix 8 oz softened cream cheese with ¼ cup sugar and 1 egg. Drop spoonfuls over the first layer of batter and swirl before adding crumbs.
Serving Suggestions:
- Serve slightly warm with a cup of coffee or tea.
- Add a scoop of vanilla ice cream for dessert.
- Dust lightly with powdered sugar instead of glaze for a simple finish.
- Serve at brunch alongside scrambled eggs and fresh fruit.
- Cut into small squares for potlucks or church gatherings.
This cake works beautifully for breakfast, brunch, dessert, or afternoon coffee time.
How to Store:
Room Temperature:
Cover tightly and store for up to 3 days.
Refrigerator:
Store covered for up to 5 days. Let slices come to room temperature or warm slightly before serving.
Freezer:
Wrap tightly in plastic wrap and then foil. Freeze up to 3 months. Thaw overnight in the refrigerator.
Frequently Asked Questions:
Can I use frozen bananas?
Yes. Thaw completely and drain excess liquid before using to prevent a dense cake.
Why is my cake dense?
Too much banana liquid or overmixing can make the cake heavy.
Can I make this in a smaller pan?
Yes, but baking time will vary. Two 8-inch square pans also work well.
Can I skip the crumb layer in the middle?
You can. Simply spread all the batter in the pan and top with the crumb mixture.
Can I make this ahead of time?
Yes. It actually tastes even better the next day as the flavors settle.
Can I turn this into muffins?
Yes. Fill muffin tins ¾ full and bake at 350°F for 18–22 minutes.






