Peanut Butter S’mores Oatmeal Cookie Bars are a decadent combination of peanut butter, chocolate, marshmallow fluff, and crunchy oats and graham crackers. These bars are chewy, sweet, and packed with flavor, making them a must-try for dessert lovers and peanut butter enthusiasts.
12 tablespoons butter, melted
2 cups light brown sugar
½ cup creamy peanut butter
2 eggs, room temperature
1 tablespoon vanilla extract
1 ½ cups all-purpose flour
¾ cup graham cracker crumbs
1 cup old-fashioned oats
1 tablespoon cornstarch
2 ½ teaspoons baking powder
½ teaspoon salt
1 cup Reese’s peanut butter baking chips
7 full-size Hershey’s chocolate bars
7 ounces marshmallow fluff
1 cup Reese's miniatures, chopped