Make cookies that don't need flour. These banana oat cookies are chewy, chocolatey, and come together with just a bowl and a baking tray.
These aren't cookies in the traditional sense. There's no flour, no creaming, no spread-and-crisp — what you get instead is something chewier and more substantial, held together by oats and banana and honest enough to admit it. If you go in expecting that, you'll love them.
The banana does most of the structural work here, replacing the flour entirely. You want bananas that are ripe enough to mash smoothly and taste sweet, but not overripe — the kind that's just turned fully yellow with a few spots. Bananas that are too far gone bring too much moisture, which throws off the texture.
Rolled oats are non-negotiable. Quick oats will turn the batter into something closer to mush; you need the whole oat for chew and structure. The fridge rest — at least 30 minutes, longer is fine — is what lets the oats hydrate and the batter firm up. Skip it and the cookies will spread too much and bake unevenly.
Egg yolks only, not whole eggs. The yolks add richness and help bind without the extra moisture and stiffness that egg whites bring — whole eggs would make the texture tough and slightly rubbery. The baking powder is there for just a little lift so the cookies don't bake up completely flat and dense.
Honey is the sweetener here, and it also adds moisture and a subtle floral note that works well with banana. Maple syrup is a 1:1 substitute with a slightly deeper flavor. Avoid granulated sugar — it won't dissolve properly into the batter without a fat and heat to cream into.
Semisweet chocolate is the right call. Milk chocolate gets lost against the banana's sweetness; dark chocolate, without flour and sugar to balance it, can turn bitter. Stick with semisweet, or go bittersweet if you want a little edge. Other mix-ins that work: chopped walnuts or pecans, dried cranberries, shredded coconut, or a mix of any of these with the chocolate.
Mix wet ingredients: Combine mashed bananas, melted butter, honey, egg yolks, and vanilla extract in a large bowl. Mix until well combined.
Season and fold: Add cinnamon, salt, and baking powder and mix well. Fold in rolled oats until fully incorporated, then fold in chocolate chips.
Rest: Cover and refrigerate for at least 30 minutes. Meanwhile, preheat your oven to 180°C with the rack in the middle position. Line two baking trays with parchment paper.
Scoop: Scoop 2 tbsp of batter per cookie onto the lined trays, spacing them about 5 cm apart. Flatten each slightly with the back of your spoon.
Bake: Bake for 12–14 minutes for a softer, chewier cookie, or 15–16 minutes for firmer edges. The cookies will look underdone in the center — that's fine. They firm up as they cool.
Cool: Cool on the tray for 10 minutes before transferring. Don't rush this; they're too soft to move straight out of the oven.
