Line muffin tins with liners.

Reserve 1 Tablespoon graham cracker crumbs.

Melt butter.

Mix butter, peanut butter, powdered sugar and graham cracker crumbs together until combined.

Use a small cookie scoop (about 1 Tablespoon size) to scoop peanut butter mixture into tins. Press the the mixture down, making an indention in the middle. I used an inverted soda pop bottle. It was the perfect size.

Cut marshmallows in half. Press sticky side down into the indention in the peanut butter cup. Move oven rack a few places down from the broiler. Set peanut butter cups under the broiler until marshmallows are golden brown. Watch close!

Melt dipping chocolate in the microwave, stirring after each 30 second interval until chocolate is smooth.

Spoon a small amount of chocolate over each peanut butter cup. Sprinkle with reserved graham cracker crumbs.

Let sit until firm.