The Modern Nonna

0 Add the ground meat, onion powder, egg, parmesan, and garlic to a large bowl. Using clean hands, mix all the ingredients together until well incorporated, about 1 minute. 
1 Divide the meat mixture into 4 equal-size portions (or 8 mini portions), and using your hands, flatten into patties. 
2 This step here is very important: make sure you make a little indent with your fingers in the center of each patty. This is key because the meat will shrink and this will ensure the burger cooks evenly all throughout.
3 Fire up the grill, and cook for 7-9 minutes on each side depending on your preferred doneness. 
6 Note: If you want to make these on the stove, lightly grease a skillet before cooking the patties on medium-high heat. 
4 Your burgers may take more or less time depending on the shape and size of the patties. The best way to test for doneness is to use a meat thermometer. 
5 Assemble onto a burger bun with your favorite toppings and enjoy!