One-Bowl Peanut Butter Banana Blondies
Soft and chewy blondies bursting with peanut butter and ripe banana flavor, made in one bowl for effortless baking. This american-inspired desserts ready in about 35 minutes layers creamy peanut butter, brown sugar, packed, large egg into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 190 calories and feeds 9, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 1/2 cup (about 1 medium banana) ripe banana, mashed
- 1/2 cup creamy peanut butter
- 3/4 cup brown sugar, packed
- 1 large egg
- 1 tsp vanilla extract
- 1 cup all-purpose flour
- 1/2 tsp baking powder
- 1/4 tsp salt
- 1/4 cup (optional) chopped peanuts
Instructions
- Step 1: Preheat the oven to 350°F and grease an 8x8-inch baking pan or line it with parchment paper.
- Step 2: In a large mixing bowl, mash 1/2 cup ripe banana until smooth, then whisk in 1/2 cup creamy peanut butter, 3/4 cup packed brown sugar, 1 large egg, and 1 tsp vanilla extract until fully combined and creamy.
- Step 3: In a small bowl, whisk together 1 cup all-purpose flour, 1/2 tsp baking powder, and 1/4 tsp salt.
- Step 4: Gradually add the dry ingredients to the wet ingredients, folding gently until just combined — do not overmix.
- Step 5: Fold in 1/4 cup chopped peanuts if using for extra crunch.
- Step 6: Spread the batter evenly into the prepared pan and bake for 20-25 minutes until a toothpick inserted into the center comes out with a few moist crumbs.
- Step 7: Allow blondies to cool completely in the pan before slicing into 9 squares and serving.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does One-Bowl Peanut Butter Banana Blondies take to make?
Total time is about 35 minutes (10 min prep + 25 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.
How do I store leftover One-Bowl Peanut Butter Banana Blondies?
Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.
Can I substitute ingredients in One-Bowl Peanut Butter Banana Blondies?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale One-Bowl Peanut Butter Banana Blondies for a different number of people?
The recipe is written for 9 servings. Multiply each ingredient by (your serving target / 9). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
What goes well with One-Bowl Peanut Butter Banana Blondies?
American desserts like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
