Let’s be honest: the only thing that makes Monday morning bearable is knowing there’s a really good muffin waiting for you. These Banana Chocolate Chip Oat Muffins are that muffin.
They’re everything you could want—hearty and wholesome from the oats, naturally sweet from extra-ripe bananas, and completely irresistible thanks to generous handfuls of melty chocolate chips scattered throughout.
They’re tender, they’re satisfying, and they have that perfect domed top that makes a muffin feel like a bakery treat. Plus, they’re packed with enough oats and fruit that you can absolutely justify one (or two) for breakfast. Or a snack. Or dessert. Basically, they’re perfect anytime.
The Secret to Tender, Never-Dry Oat Muffins
Oat muffins can sometimes veer into dry, dense territory. Not these. The secret to a tender, moist oat muffin lies in two things: soaking the oats and using very ripe bananas. By letting the oats sit in the buttermilk for a few minutes before mixing, they absorb some of the liquid and soften, which keeps them from stealing moisture from the rest of the batter.
The bananas do double duty—their natural sugars add sweetness, and their moisture content keeps every bite incredibly tender. The other trick? Don’t overmix. Once the dry ingredients hit the wet, mix just until combined. A few lumps are your friend. Overmixing develops gluten, which can make muffins tough, and we’re here for soft, pillowy perfection.
Instructions
Preheat and Prep
Preheat your oven to 375°F (190°C). Line a 12-cup standard muffin pan with paper liners or generously grease each cup with butter or non-stick spray .
Soak the Oats
In a small bowl, combine the 1 ½ cups old-fashioned rolled oats with the buttermilk. Stir to combine and let it sit for 10-15 minutes while you prepare the rest of the ingredients. This softens the oats and ensures a tender muffin .
Mash the Bananas
In a separate bowl, mash your very ripe bananas with a fork until mostly smooth with a few small lumps remaining. Measure out 1 ½ cups (340g) and set aside. The riper the bananas, the better the flavor .
Combine Dry Ingredients
In a large bowl, whisk together the flour, baking powder, baking soda, salt, and cinnamon until well combined .
Combine Wet Ingredients
In another large bowl, whisk together the melted butter, brown sugar, granulated sugar, eggs, and vanilla extract until smooth. Whisk in the mashed bananas. The mixture should be well combined and slightly thick .
Add the Oat Mixture
Pour the soaked oats and buttermilk into the wet ingredients and stir until combined .
Combine Wet and Dry
Pour the wet ingredients into the dry ingredients. Use a spatula to fold them together gently, mixing just until no streaks of flour remain. The batter will be thick and lumpy—do not overmix! .
Fold in Chocolate Chips
Gently fold in 1 ¼ cups of the chocolate chips, reserving about ¼ cup for topping. Fold just a few times until they’re evenly distributed .
Fill the Muffin Cups
Divide the batter evenly among the 12 muffin cups. They will be very full—almost to the top. This is intentional and helps create those beautiful domed tops. Sprinkle the remaining chocolate chips, 2 tablespoons of oats, and turbinado sugar over the tops of each muffin .
Bake
Bake for 18-22 minutes, until a toothpick inserted into the center of a muffin comes out clean or with a few moist crumbs (avoid hitting a melted chocolate chip for an accurate test). The tops should be golden brown and spring back when lightly touched .
Cool
Let the muffins cool in the pan for 10 minutes. This allows them to set properly. Then, carefully transfer them to a wire rack to cool completely, or serve warm for the ultimate melty-chocolate experience .
Serve and Store
Enjoy these muffins warm or at room temperature. Store any leftovers in an airtight container at room temperature for up to 3 days. They also freeze beautifully for up to 3 months .
Pro-Tips for Muffin Mastery
- Use Old-Fashioned Rolled Oats: Quick oats will break down too much and won’t give you the same hearty texture. Old-fashioned oats are the way to go .
- Don’t Skip the Oat Soak: This 10-minute step is the secret to tender muffins. It allows the oats to absorb liquid and soften, preventing them from stealing moisture from the batter .
- Very Ripe Bananas Are Non-Negotiable: The blacker, the better. Super-ripe bananas are sweeter, more flavorful, and mash more easily into the batter .
- Fill to the Top: Don’t be shy! Filling the muffin cups almost to the brim is what gives you those beautiful, overflowing, bakery-style domes .
- Reserve Chocolate Chips for Topping: Sprinkling extra chips on top before baking gives you those gorgeous, melty chocolate pools that make these muffins look (and taste) irresistible .
