Best Low-Carb Keto Meatballs

Step 1
Combine ground beef, egg, Parmesan cheese, flaxseed, oregano, salt, and pepper in a large bowl; mix with your hands until well combined. Roll mixture into golf ball-size meatballs.

Step 2
Heat olive oil in a large skillet over medium heat. Add meatballs to the skillet; cook in hot oil until browned, about 5 minutes on each side. Pour tomato sauce over meatballs; bring to a simmer and cook until meatballs are cooked through, 25 to 30 minutes. An instant-read thermometer inserted into the center of a meatball should read at least 160 degrees F (72 degrees F).