Defrost the dough as needed and/or let rest at room temperature for a minimum 30 minutes.
Using a pastry scraper or sharp knife, cut the round of dough in half. Cover the piece you won't be using right away with plastic wrap or a damp towel.
On a floured countertop or board, roll out the pizza dough to approximately a 10½" x 15" rectangle. Using a sharp knife, cut the dough horizontally down the middle and then crosswise into 8 pieces. See images in the post above.
Place one meatball bomb in the center of each piece of dough. Bring in each side one at a time and seal the meatball. Place on a cooking sprayed or oiled sheet pan. Repeat with all the remaining meatballs. You should have approximately 16 meatballs.
In a small ramekin, add 1 tsp water to the beaten egg and brush over the pizza dough meatball bombs.
Using the chart in the notes below, bake the meatballs until a thermometer shows the inside is cooked to 165° approximately 20 minutes.
Serve with your favorite pizza and tomato sauces - see ideas below!