Prepare the ingredients for the recipe.
Prepare the ingredients for the sauce.
Bring water to a boil, add a bit of oil. Add noodles and cook them for 5-6 minutes. Drain when cooked.
Preheat skilled to high heat. Cook the pre-sliced beef until it's golden brown. Season beef with half portions of the following - soy sauce, sesame oil and brown sugar, while it's cooking.
Place noodles in a large bowl, top them with cooked beef.
Dice onion into long strips. Cut carrots into strips and chop green onion. Preheat an oiled skilled and toss in the carrots and onion.
When the veggies soften up, add in the remaining half portions of the following - soy sauce, sesame oil and brown sugar. Add in pressed garlic, green onions and cook for a few minutes until it's softened.
Add diced spinach into the mixture and turn off the heat imminently.
Add all vegetables to the noodles and toss everything together.
Serve while it's still warm. This dish also reheats well.