Preheat oven to 375°F (190°C). Lightly grease a standard muffin tin with olive oil or cooking spray.
Prepare dough: Unroll the pizza dough on a flat surface and gently stretch into a rectangle. Cut lengthwise into 6 even strips (about 2 inches wide).
Add fillings: Spread a very thin layer of marinara sauce on each strip. Sprinkle with mozzarella cheese.
Layer pepperoni: Place pepperoni slices along the top edge of the dough strip, overlapping them, with the top half of the pepperoni hanging off the dough.
Fold and roll: Fold the bottom half of the dough up over the pepperoni. Roll the dough tightly from one end to create a rose shape. Pinch the end to seal.
Bake: Place each rose into a muffin cup. Bake for 15-20 minutes until the dough is golden brown. Let cool for 5 minutes before serving.
