Thaw 12 dinner rolls. Spray your muffin tins with cooking spray.
In a large bowl, mix cheese, sauce, oregano and 3/4 cup of pepperoni. Use kitchen scissors to cut each dinner roll into small pieces. Place pieces of dinner rolls in bowl with sauce mixture. Mix dinner roll pieces and sauce mixture until well combined. Fill muffin tins with dough/sauce mixture. Top with remaining 1/4 cup pepperoni.
Bake at 400 degrees 20-25 minutes. Cool and remove from muffin tins.
Store in a closed container.