These Oatmeal Peanut Butter Cookie Bars are a game-changer. Soft and slightly gooey in the center, they’re made from simple, wholesome ingredients that keep them kid-friendly and satisfying. This version swaps refined sugar for maple syrup, uses white whole wheat flour and rolled oats for texture, and relies on all-natural peanut butter for rich flavor. They’re easy to prepare and versatile enough for a quick snack, lunchbox treat, or an indulgent-but-better dessert.
Peanut Butter Cookie Bars Ingredients
These bars come together with pantry-friendly staples. Use high-quality, drippy natural peanut butter (stir it if the oil has separated) for the best texture and flavor.
Dry Ingredients
- 1 cup rolled oats
- 1/4 cup white whole wheat flour
- 1 teaspoon baking soda
- 1 teaspoon ground cinnamon
- Pinch of salt
- 1/3 cup mini chocolate chips (optional)
Wet Ingredients
- 2 large eggs
- 1 cup creamy all-natural peanut butter (drippy consistency)
- 1/2 cup maple syrup
- 1 teaspoon vanilla extract
Choosing an All-Natural Peanut Butter
Look for peanut butter with no added sugar and a smooth, pourable consistency. If the oil has separated, simply stir until uniform. Popular options at most grocery stores include well-known supermarket brands and natural varieties from bulk retailers. Any drippy nut butter will work in this recipe if you prefer almond or cashew butter instead of peanut.
Ingredient Swaps
- White whole wheat flour: Substitute with all-purpose flour, regular whole wheat flour, or a 1:1 gluten-free flour blend. Do not replace with nut-based flours like almond or coconut flour on a 1:1 basis.
- Peanut butter: Swap for any drippy nut butter (almond or cashew work well). Use a 1:1 ratio.
- Maple syrup: Replace with another liquid sweetener such as honey or agave in a 1:1 ratio.
- Eggs: This recipe relies on eggs for structure. Because it’s a nut-butter-based bar, egg substitutes are not recommended here.
Recipe Details
Yield: 9 bars • Prep time: 15 minutes • Cook time: 15 minutes • Total time: 30 minutes
Author: Lee Funke
Instructions
- Preheat your oven to 350°F (177°C). Prepare an 8×8-inch baking pan by lining it with parchment paper or spraying it lightly with nonstick spray.
- In a medium bowl, combine the rolled oats, white whole wheat flour, baking soda, ground cinnamon, and a pinch of salt. Stir until evenly mixed. If you plan to fold in chocolate chips, reserve them for the final step.
- In a separate bowl, whisk the eggs. Add the peanut butter, maple syrup, and vanilla extract, stirring until smooth and well combined.
- Slowly fold the dry ingredients into the wet mixture, mixing until everything is evenly incorporated. If using chocolate chips, fold them in now.
- Spread the batter evenly in the prepared pan, smoothing the top with a spatula.
- Bake at 350°F for 15–18 minutes, depending on your oven and how gooey you want the center. Start checking at 15 minutes—bars will firm up as they cool.
- Remove from the oven and let cool in the pan for at least 20–25 minutes before cutting into squares. For a firmer texture, chill briefly in the refrigerator before slicing.
Storage
Store cooled bars in an airtight container in the refrigerator for up to 5 days.
Freezer instructions: Cool the bars completely, lay them on a baking sheet, and freeze for 1 hour to firm them. Transfer the frozen bars to a freezer-safe bag or container, press out excess air, and freeze for up to 3 months. Thaw in the refrigerator or at room temperature before serving.
Tips & Notes
- You can use any drippy nut butter in place of peanut butter—cashew or almond are great alternatives.
- If you need a gluten-free option, swap the white whole wheat flour for a 1:1 gluten-free flour blend. Avoid coconut flour or other nut-based flours as direct 1:1 substitutes.
- For dairy-free bars, choose dairy-free chocolate chips or omit them entirely.
- Adjust bake time to control the gooeyness: bake less for softer centers, longer for firmer, more cookie-like texture.
Nutrition
Nutrition information is an approximation.
- Calories: 361 kcal
- Carbohydrates: 37 g
- Protein: 9 g
- Fat: 21 g
- Fiber: 5 g
- Sugar: 19 g
More Healthy Dessert Recipes
If you enjoyed these bars and want similar recipes, try variations that use almond butter or seasonal fruit additions. You can also experiment with a grain-free cookie bar base or freezer fudge made with nut butter and seasonal spices.
Love this recipe? Tag your baking photos with #fitfoodiefinds when sharing on social media—we’d love to see your creations!