In a large mixing bowl whip the butter. Slowly add in 1 cup of powdered sugar. Mix until combined. Add the vanilla and 1 more cup of powdered sugar and continue mixing. At this point you may need to add a teaspoon or two of milk to thin the frosting down. Add more or less milk depending on the consistency. You want the frosting to be thick, creamy and to be able to hold a point. Mix in the green food coloring and stir until smooth. Place in a frosting bag with a grass tip. Then swirl onto the Reese’s Peanut Butter Cups.
Draw two eyes onto the Reese’s Pieces with a writer pen. Then place a little dab of frosting onto the Reese’s Pieces with a toothpick and then place the heart sprinkle on and allow to dry.
Place love birds on top of Reese’s Peanut Butter Cups.