Cook sweet potato starch noodles or rice noodles according to package instructions. Drain once done and set aside.
Prepare the simmering sauce by combining Sambal Oelek, oyster sauce, tamari and coconut aminos in a bowl. Mix well and set aside.
Heat a splash of garlic-infused olive oil in a large frying pan on medium-high heat. Once the oil is hot and shimmering, place beef in a thin layer on the frying pan and DO NOT TOUCH for 3-5 minutes, until the beef achieves a deep brown crust.
Gently lift one piece of beef to assess color. If the beef is the deep brown color of a nicely grilled burger, it's ready to flip! Let sit on the other side for 1-2 minutes longer.
Optional: Before adding other ingredients, spoon out any excess rendered fat. Not necessary depending on the fat content of your beef, but feel free to do this if you prefer!
Turn down heat to medium and add tomatoes and simmering sauce. Break up the ground beef while mixing in the sauce. Once the beef is completely broken up and ingredients are thoroughly combined, let simmer for 10 minutes.
Add cooked noodles, green onion tips, 1 teaspoon of garlic-infused olive oil, and freshly cracked black pepper to taste, for extra flavor. Use tongs to incorporate added ingredients thoroughly into the beef mixture. Once thoroughly combined, turn off heat and prepare to serve! Garnish with extra green onion or Furikake.