Preheat oven to the temperature recommended according to pizza dough package instructions.
Use the small heart cookie cutter to cut heart-shaped pepperoni slices on your large cutting board (or plate) and set aside.
Use the rolling pin to roll out the pizza dough onto a large cutting board. Utilizing the large heart cookie cutter, cut out heart-shapes from the flattened pizza dough. If you aren’t able to cut four hearts from your crust, cut as many as you can, then form the dough into a ball and roll it out using a rolling pin to cut additional hearts.
Place the heart-shaped dough on a lightly sprayed baking sheet or pizza stone using cooking spray. Top each heart-shaped pizza with pizza sauce using a basting brush to spread it evenly.
Generously top the pizza sauce with handfuls of shredded mozzarella cheese. Be sure to keep the cheese on the sauce on the dough so it retains its shape while cooking.
Place three heart-shaped pepperoni slices on each pizza.
Bake according to pizza dough package instructions or until the crust is golden brown and crispy with the cheese melted and sizzling.