Banana Crumb Cake
This Banana Crumb Cake is what I make when I notice bananas sitting on the counter with more brown spots than yellow left on them. Instead of tossing them in the freezer and forgetting about them, I can have this cake mixed and in the oven in about 15 minutes, all in one bowl. It bakes up soft and moist with plenty of banana flavor, and the brown sugar crumb topping gives it that bakery-style finish without adding much work.

I’ve taken this cake to potlucks, sliced it for breakfast, and served it for dessert more times than I can count. It makes enough to feed a crowd, holds up well if you bake it ahead, and freezes without any trouble. It’s a simple, old-fashioned banana cake that fits right into a Southern kitchen and always gets eaten.
Before You Get Started
- Use very ripe bananas: The more brown spots, the better. Overripe bananas mash and blend easier and give the cake a deeper banana flavor.
- Soften the butter: Soft butter blends smoothly into the banana mixture. If your butter is cold, microwave it at low power in short bursts so it softens without melting.
- Pick your pan size: You can use two loaf pans or two 8×8 pans. If you use loaf pans, expect the bake time to lean closer to the longer end.
- Make crumbs that hold together: When cutting the butter into the topping, aim for a mix of small crumbs with a few pea-sized pieces. That gives you a topping that bakes crisp and buttery instead of powdery.
Recipe Ingredients

- sugar
- ripe bananas
- milk
- self-rising flour
- light or dark brown sugar
- unsalted butter
- eggs
- vanilla extract
How to Make Banana Crumb Cake
1. Prepare the Batter
Start by peeling the bananas and placing them in a large mixing bowl. Add the granulated sugar and mix until the bananas are completely liquefied.
Add the butter and continue mixing until it’s well blended with the banana mixture. Stir in the flour, eggs, milk, vanilla extract, and nuts if using. Mix just until everything is combined.




2. Prepare the Pans
Spray two loaf pans or two 8×8 baking pans with cooking spray.

3. Make the Crumb Topping
In a medium bowl, add the flour, brown sugar, and butter. Use a long-tined fork or pastry cutter to cut the butter into the mixture until the largest pieces are about the size of peas, with smaller crumbs throughout.


4. Assemble the Cake
Pour one quarter of the batter into each pan to form the base layer. Sprinkle one quarter of the crumb topping evenly over each layer.
Divide the remaining batter between the pans, then top with the remaining crumb mixture.



Bake
Bake at 350°F for 45 minutes to 1 hour, until a toothpick inserted into the center comes out clean.
Allow the cake to cool slightly before slicing.


Storage
Store leftover banana crumb cake in an airtight container at room temperature for up to two days. For longer storage, freeze tightly wrapped slices for up to three months. Thaw at room temperature before serving.

Notes for Making Banana Crumb Cake
- Freeze bananas ahead: When bananas start turning brown, mash them and store in freezer bags labeled with how many bananas are inside. Three bananas per bag makes baking easy later.
- Add a glaze: For an even more indulgent cake, top your banana crumb cake with a simple vanilla glaze. Make by combining 1 cup of powdered sugar with 1–2 tablespoons of milk and 1 teaspoon of vanilla extract and drizzling it over the cooled cake.
- Spice it up: Add cinnamon or nutmeg to the crumb topping for extra warmth.
- Extra moist cake: Buttermilk can be used in place of regular milk.
- Make your own self-rising flour: For each cup of all-purpose flour, add 1½ teaspoons baking powder and ½ teaspoon salt.

Ingredients
Cake
- 2 cups granulated sugar
- 1 cup milk
- 1 cup chopped nuts, optional
- 2 cups self-rising flour
- 1 stick butter
- 2 eggs
- 3 bananas
- 1 tsp vanilla extract
Crumb Topping
- 1 stick butter
- 1 cup dark or light brown sugar
- 1 cup flour
Instructions
- Spray two loaf pans or 8×8 pans with cooking spray.
- Place peeled bananas in a mixing bowl and add sugar. Mix until bananas are liquefied.3 bananas, 2 cups granulated sugar
- Add butter and mix until creamed together with the banana mixture.1 stick butter
- Add all other ingredients and blend well.1 cup milk, 1 cup chopped nuts, optional, 2 cups self-rising flour, 2 eggs, 1 tsp vanilla extract
- In a medium bowl, place all of the topping ingredients. Cut together with a long-tined fork until well blended.1 stick butter, 1 cup dark or light brown sugar, 1 cup flour
- Pour 1/4 of the cake batter into each pan and top with 1/4 of the crumb mixture.
- Pour in the remaining batter and top with the remaining crumb mixture.
- Bake for 45 minutes to an hour at 350. The cake is done when a toothpick inserted in the center comes out clean.

Just made this. Had problems with crumbs as I read others state. Thought it was because I used butter instead of marg. Made second batch with marg. and got the same thing. Thinking maybe humidity is the cause. I never saw a response on how to fix it. Help?
Hey Hilary!
The crumbs in this crumb cake are going to be soft, not dry like they are in some of the store-bought ones. Does that answer your question or help with your problem? If not please let me know exactly what it is you’re going for and I’ll check back later today and do my best to help!
Thank you so much!
Gratefully,
Christy
Oh myyyyyy! We made this tonight as we are having guests here tomorrow after a large funeral. It is delicious! I’m sure everyone will love it. Thanks for the idea. Simple and scrumptious … yes!
I am so glad to hear that you liked the cake Bobbi. And so sorry to hear about your loss. My thoughts and prayers are with you.
~waves back at Christy~
Bountiful Blessings for sure!!
love the way you are so organized and get so much baking and cooking done. And that you give so much away. Admire you for doing so much.
I happened to be on FB this morning, and I came across this. I was already thinking about banana pudding because my bananas are REALLY ripe. Now, I’m going to make this. I love having all of the ingredients to do things like this. Yay!
This sounds amazing! I constantly have leftover too-ripe bananas, so I definitely want to try this soon. I am curious though… the directions don’t mention preheating the oven. Are you supposed to wait until you’re ready to put the pans in the oven to turn it on?
Christy,
I was glad this came across Facebook today. We had a family get-together yesterday and I made a triple batch of banana puddin… I was glad to see that you and I have the same opinion of banana puddin…..the ONLY “real” banana puddin eeeeee-is from scratch….. anyway, I had 3 bananas left over so this came in perfect timing. My crumb topping didn’t turn out crumbly, I had to drop globs on as a previous poster did but it came out great anyway. I suspect my brown sugar was the culprit but who knows….Have you ever tried it with some instant oats added to the crumb mixture??? I’m gonna try that next time. Thanks for writing out the recipes that have been kitchen taught in my family for years. Now my girls have it in writing – I bought each of them a copy of your cookbook- and I wrote notes and tips on the sides. thanks again!
I had a real ‘sticky’ problem with the crumbs, too. I added a little more flour and sugar…then that thickened it but didn’t quite do the trick, I used dry oats. Seems to have worked very well.