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Banana Cake With Peanut Butter delivers a moist crumb and a simple, creamy peanut butter topping you can make in under an hour. You get reliable texture from whole wheat pastry flour and a frosting that whips up in minutes.
This recipe answers the need for an everyday cake that uses pantry basics and scales easily to a 9×9 baking dish. If you want a pet-friendly spin, try the homemade dog birthday cake peanut banana recipe for inspiration.
Why Make This Recipe
This cake is straightforward and forgiving. You mix wet and dry components separately, which reduces overmixing and yields a tender crumb.
Ingredients are common and pantry-friendly, including whole wheat pastry flour and maple syrup. The frosting uses natural peanut butter and a touch of water for a quick, spreadable finish.
Total time is short: about 10 minutes prep and roughly 20–24 minutes in the oven. It’s a practical choice for casual gatherings, after-school snacks, or a low-effort dessert.
How to Make Banana Cake With Peanut Butter
The approach relies on separating dry and wet components to control gluten development while keeping the cake moist. Using banana puree and a modest amount of oil gives flavor and tenderness without heavy greasing.
The frosting is a simple emulsion of natural peanut butter, sugar, and water. Adjusting the peanut butter-to-water ratio changes spreadability so you can get a thicker or lighter top depending on preference.
Ingredients
- 1 1/2 cups whole wheat pastry flour
- 1 teaspoon baking powder
- 1 teaspoon baking soda
- pinch of salt
- 1/4 cup sugar
- 1/2 cup maple syrup
- 1/2 cup banana puree
- 1/2 cup oil
- 1/4 cup water
- 1 beaten egg (or 4 teaspoons flax for vegan)
- 1/4 cup natural peanut butter
- 2 tablespoons sugar
Directions
- Preheat oven to 350 degrees.
- In a large bowl, sift the flour, baking powder, baking soda, salt (and flax if using).
- In another bowl, combine sugar, maple syrup, banana puree, oil, water, and egg.
- Mix wet ingredients into dry and pour into a greased 9×9 baking dish.
- Bake for 20-24 minutes or until a knife inserted comes out mostly clean.
- For frosting, whisk peanut butter with sugar and water until smooth and fluffy; adjust peanut butter or water to achieve desired consistency.
- Frost cooled cake and serve immediately.
How to Serve Banana Cake With Peanut Butter
Serve the cake slightly cooled so the natural peanut butter frosting holds shape. Slice into squares and present on a simple platter.
Pair it with black coffee, cold milk, or a lightly brewed tea to balance the sweetness. Fresh berries or sliced bananas on the side add brightness.
For a party, dust with a few chopped peanuts or banana chips for texture. Keep decorations minimal to preserve the rustic, home-baked appeal.
How to Store Banana Cake With Peanut Butter
Store at room temperature covered for up to 2 days to keep the crumb tender. If your kitchen is warm, refrigerate the frosted cake in an airtight container for up to 5 days.
To freeze, wrap individual slices tightly in plastic wrap and place in a freezer-safe container for up to 3 months. Thaw overnight in the refrigerator and bring to room temperature before serving to restore softness.
Avoid leaving the cake uncovered to prevent the top from drying and the frosting from cracking.
Tips to Make Banana Cake With Peanut Butter
- Use ripe bananas for the best banana puree flavor and natural sweetness.
- Measure whole wheat pastry flour by spooning and leveling to avoid a dense cake.
- Do not overmix after combining wet and dry ingredients; stop when just combined.
- Check the cake at 18 minutes to prevent overbaking; oven times vary.
- If using flax for vegan binding, allow the flax mixture to sit until gelatinous before adding.
- Adjust frosting thickness by adding water a teaspoon at a time for a lighter spread.
- Use natural peanut butter (no hydrogenated oils) for a clean flavor in the natural peanut butter frosting.
- Cool the cake completely before frosting to avoid a runny top.
Common Mistakes to Avoid
A common error is overmixing the batter, which produces a tough texture. Mix just until the dry streaks disappear to keep the crumb tender.
Another mistake is frosting a warm cake. This causes the frosting to melt or slide off. Always cool the cake fully before spreading the peanut butter topping.
Variations
Vegan banana cake: replace the egg with the flax option and confirm your sugar is vegan. The method stays the same.
Add-ins: fold in a handful of dark chocolate chips or chopped peanuts for texture. Use cinnamon or nutmeg for a spiced version.
Mini loaf or muffins: bake in smaller pans; reduce bake time and check doneness earlier.
FAQs
Can I use all-purpose flour instead of whole wheat pastry flour?
Yes. Use the same volume, but the texture will be slightly lighter and less nutty.
Is maple syrup necessary or can I use honey?
Honey works as a substitute, though it will alter flavor slightly. Use the same volume.
How do I make the frosting thicker?
Use more peanut butter and less water, or add a bit more sugar to thicken the natural peanut butter frosting.
Can I make this nut-free?
Replace peanut butter with a seed butter like sunflower seed butter and confirm no cross-contamination with nuts.
Will this cake rise much with baking powder and soda?
The combination provides modest rise suitable for a 9×9 cake; you’ll get a gentle dome but not a tall layer cake.
Can I halve or double the recipe?
Yes. Halve for a smaller pan and double for a larger sheet; adjust baking time and monitor doneness.
Why is my cake dense?
Overmeasuring flour, overmixing, or using underripe bananas can cause density. Measure accurately and mix minimally.
What is the best way to mash bananas for the puree?
Use a fork or blender; slightly chunky puree adds texture while fully smooth yields a uniform crumb.
Conclusion
This Banana Cake With Peanut Butter is practical, quick, and adaptable for everyday baking or small gatherings. For a detailed scratch-made variation, try the Scratch Made Banana Cake with Peanut Butter Frosting Recipe for more technique notes and presentation ideas.