Combine ground meat, bread crumbs, grated onion, egg and salt & pepper. Work the meat with your hands until well mixed.
Out of prepared meat, roll out equal-sized meatballs. Use an ice cream scoop to make sure your portions stay consistent.
Preheat a skillet with a few tablespoons of light olive oil. Pop your raw meatballs on the skillet. To turn the meatballs, lift up the skillet and shake it from side to side. This will help your meatballs keep their round shape.
Remove meatballs and set the skillet aside.
Add butter to the same skillet you friend the meatballs in. Once butter is melted, add flour to the butter and stir until well combined.
Slowly whisk in water into the flour mixture. Then, whisk in whipping cream, followed by the broth concentrate.
Press garlic into the cream.
Add your meatballs in. Let them simmer for 2-3 minutes and serve over mashed potatoes, rice, or pasta.