Moist Banana Snack Cake Recipe for Lunchboxes

This Banana Snack Cake is tender, light, and full of banana flavor. Made with whole-grain oat flour, it’s naturally gluten-free, free of refined sugar, and perfect for breakfast, an afternoon snack, or a simple dessert.

I’m always glad to have overripe bananas on hand so I can bake something cozy like banana nut bread or banana oatmeal muffins. This Banana Oat Snack Cake is a nice variation—moist, tender, and studded with dark chocolate chips for a little indulgence.

Built around whole-grain oat flour, this cake offers a soft, fluffy crumb while rolled oats add a pleasant bit of chew. A full cup of mashed banana gives the cake pronounced banana flavor plus natural sweetness and moisture. Ground cinnamon and dark chocolate chips finish the cake with warm and slightly bitter-sweet notes that pair beautifully with banana.

Why you’ll love this recipe

• Tender, fluffy texture with genuine banana flavor and dark chocolate chips.
• Made with whole-grain oat flour to keep it gluten-free; also dairy- and refined-sugar-free when using dairy-free chocolate chips.
• One-bowl recipe that comes together quickly and is easy to prep.
• Freezer-friendly and ideal for meal prep or packing school/work snacks.

Recipe ingredients

All ingredients are pantry-friendly and many can be swapped to suit what you have on hand.

• Bananas – Use very ripe bananas for the best sweetness and flavor; the more brown spots, the better.
• Eggs – Two large eggs add structure and help the cake set.
• Coconut sugar – A mild, lower-glycemic sweetener that works well here; you can substitute granulated or brown sugar if you prefer.
• Coconut oil – Adds moisture and a tender crumb; any neutral oil will also work.
• Almond milk – Unsweetened almond milk is used, but any dairy or plant milk can be substituted.
• Oat flour – Use certified gluten-free oat flour if needed. Oat flour provides a soft crumb ideal for this cake. To make oat flour at home, blend rolled oats until fine.
• Rolled oats – Provide texture and chew; you may replace rolled oats with the same amount of oat flour if you prefer a finer crumb.
• Baking powder – Leavening to help the cake rise.
• Cinnamon – Adds warm spice; substitute with your favorite spice blend if desired.
• Baking soda – Helps with lift and tenderizes the crumb by neutralizing acids.
• Salt – Enhances overall flavor.
• Dark chocolate chips – I used dairy-free dark chips, though any chocolate works.

See the recipe card below for the exact ingredient amounts and measurements.

How to make banana oat cake

This banana oat cake is simple and quick. It’s a true one-bowl recipe and bakes in an 8×8-inch pan.

Pro tip: Choose very ripe bananas with plenty of brown speckles for the best banana flavor.

1. Preheat oven to 350°F (175°C). Grease an 8×8-inch baking dish or line it with parchment.
2. Mash the bananas in a large bowl until mostly smooth.
3. Add the eggs, coconut sugar, melted coconut oil, and almond milk. Whisk until evenly combined.
4. Stir in the oat flour and rolled oats. Sprinkle the baking powder, cinnamon, baking soda, and salt over the batter and whisk until uniform. Fold in the dark chocolate chips.
5. Pour the batter into the prepared pan and bake for 30–40 minutes, or until a toothpick inserted in the center comes out mostly clean and the top is lightly golden.
6. Cool completely on a wire rack before slicing. Serve and enjoy.

Recipe FAQs

Recipe notes

• Pro tip: Very ripe, spotty bananas give the best flavor and sweetness.
• Oat flour creates a very soft crumb; adding rolled oats gives texture. If you prefer a uniformly soft crumb, swap the rolled oats for an equal amount of oat flour.
• Swap chocolate chips for chopped nuts, dried fruit, or seed mixes if you prefer.
• For a dairy-free version, use dairy-free chocolate chips and plant milk.

More banana recipes you’ll love

• Almond flour banana muffins
• Banana coconut cream smoothie
• Gluten-free banana bread
• Peanut butter banana chocolate chunk muffins

Did you try this recipe? If so, please leave a review and tag @flavorthemoments on social media so I can see what you made!