Preheat: Heat oven to 400°F, line the largest baking tray you have with foil, spray with cooking spray.
Mix: In a large bowl, mix the hamburger, eggs and spices. Shape the mixture into ping pong sized balls and place 1 inch apart on the tray. Approx. 30 to 35 meatballs.
Roast: Roast the uncovered meatballs for 15 to 20 minutes or until the temperature reaches 160°F and no longer pink in the center.
Remove: Remove the meatballs from the oven and turn down the oven temperature to 350°F.
Toast: Place the buns on a baking tray and gently toast in the oven until the buns are warmed through and lightly crispy, about 5 minutes.
(Optional): Heat marinara sauce on the stove in a large pot.
Assemble: Remove the buns, assemble the subs by placing 4 to 5 meatballs on each sub and add sauce. Top with a couple slices of cheese.
Toast: Place the subs on a large baking tray and bake in the oven until the cheese has melted. Ready to serve in about 2 to 3 minutes.
Chow's Up!