Preheat oven to 425 degrees F.
In a mixing bowl, beat cream cheese. Add the spinach, minced onion, Parmesan cheese, salt and pepper and beat to combine.
Roll pizza dough out into a large square. Cut into 20 squares (equal to 4 horizontal cuts and 5 vertical cuts).
Using a mini cookie scoop, put a scoop of spinach filling onto each square. A mini cookie scoop is approximately 2 tsp. Fold the squares in half and pinch the edges to seal.
Bake for 10 to 12 minutes or until golden brown. Allow to cool slightly. If desired serve with spaghetti or marinara sauce for dipping.