Line plate with parchment paper, making sure it will fit in your freezer.
Add peanut butter and protein powder to a bowl and mix well — depending on what kind of protein you use — you may need to add more (1 tbsp at a time) until you reach a thick dough-like consistency!
Roll dough into a ball and place on a parchment paper-lined plate. Slightly flatten dough and place in the freezer for 30 minutes.
Cut out hearts using a cookie cutter (or you can roll into balls or make hearts by hand) and set back in the freezer for at least 1 hour.
Melt chocolate chips with coconut oil in 30 second intervals in the microwave, stirring between each (or on stovetop).
Dip each heart into melted chocolate and place on another parchment paper-lined plate. Optional to top with sprinkles and set back in the freezer to set for another hour or 2. Keep stored in the freezer. Enjoy!