These bars are so insane. Please do yourself a favor and make them, but don’t drop them all on the floor like I did. Pregnancy butterfingers is a real thing. Happy hump dayyyy✨
Preheat the oven to 350F degrees and line a 9×13 inch pan with parchment paper,
In a medium bowl whisk together the flour, baking powder and salt. In a separate large bowl beat together the butter, brown sugar and white sugar until soft.
Beat in the peanut butter. Then mix in the egg and egg yolk until smooth. With the mixer on low speed, mix the flour mixture into the peanut butter mixture about ½ at a time. Use your hands to mix towards the end. Remove about 1 cup of batter from the bowl.
Press the rest of the peanut butter dough into the bottom of the lined pan. Bake the peanut butter layer for 25 minutes, or until the top looks fully set.
Remove from oven and carefully spread marshmallow layer. Pinch off pieces of the reserved peanut butter dough, flatten them slightly into pieces about 1 inch in size and place on top of the marshmallow layer. You do not need to entirely cover the marshmallow layer. bake for 10 more minutes!
Remove the pan from the oven and let the bars cool at room temperature for at least 1 hour before slicing. enjoy!