Peanut Butter Oatmeal Bars

Peanut Butter Oatmeal Bars

These soft bars combine rolled oats, flour, applesauce, peanut butter, and brown sugar. A small amount of butter adds flavor while applesauce keeps the crumb moist. The fixed 9-inch pan produces 12 substantial bars.

Details

• Yield: 12 bars
• Prep: 15 minutes
• Bake: 26–31 minutes
• Equipment: 9-inch square metal pan, parchment, bowls, mixer, spatula, rack, thermometer

Ingredients

• 1 cup all-purpose flour
• 1 cup old-fashioned rolled oats
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/4 teaspoon fine salt
• 1/2 cup unsweetened applesauce
• 1/2 cup packed light brown sugar
• 1 large egg
• 1/3 cup smooth peanut butter
• 1 tablespoon unsalted butter, melted
• 1 teaspoon vanilla extract
• Cooking spray

Method

1. Heat the oven to 350°F. Spray the pan and line it with parchment.
2. Whisk flour, oats, baking powder, baking soda, and salt.
3. Beat applesauce and brown sugar for 30 seconds. Beat in egg, peanut butter, melted butter, and vanilla until smooth.
4. Fold dry ingredients into wet just until evenly moistened. Spread the thick batter into the corners and level the surface.
5. Bake 26–31 minutes, until the center is set, the edges are lightly browned, and the center reaches 160°F.
6. Cool 15 minutes in the pan, then lift to a rack. Cool completely and cut into three rows by four rows.

Texture and troubleshooting

Conventional smooth peanut butter gives the most predictable consistency. Natural peanut butter can separate and may produce oily or dry patches unless stirred completely. Rolled oats provide chew and absorb moisture while the bars cool. Do not replace all the flour with oats; the flour supplies structure.

The batter is thicker than cake batter. Press it outward with a damp or lightly sprayed spatula instead of adding unmeasured liquid. If the center remains glossy and moves when the pan is nudged, continue baking. Overbaking dries the applesauce-based crumb, so begin checking at 26 minutes.

Serving and substitutions

Serve plain or with sliced banana. Almond butter can replace peanut butter by volume, but allergen labeling changes. Sunflower-seed butter may react with baking soda and create a harmless green tint after cooling. Regular melted butter can be replaced with neutral oil in the same amount, with a small flavor change.

Storage

Store cooled bars covered at room temperature for one day or refrigerate for up to 5 days. For longer storage, freeze separated by parchment for up to 2 months. Thaw in the refrigerator. Anyone with a peanut allergy should avoid the recipe and cross-contact from utensils or surfaces.

Clean cutting and portioning

Chilling the fully cooled slab for 20 minutes firms the peanut-butter crumb and makes cleaner cuts. Lift with the parchment, place on a board, and mark three equal sections in one direction and four in the other. Wipe the knife after each cut. Do not cut in the metal pan, because the blade can damage its surface.