Bring a pot of salted water to a boil. Once most of the meal is complete cook the noodles according to the directions on the package. Drain well.
Heat a nonstick pan on medium high heat. Once hot add in the olive oil. Saute the onions and peppers until they soften. Add in the garlic and saute for 1 - 2 minutes. Push the contents of the pan over to one side. Add in the beef and brown all over. Season with salt and pepper.
Add the soy sauce and broth; bring to a simmer to concentrate the flavor. Season with salt if needed.
Stir in the cornstarch slurry a little at a time until the sauce thickens to a creamy consistency. (Add more cornstarch if needed to thicken or add broth to thin the sauce to the proper consistency)
Toss in the noodles. Serve with bread and garnish with cilantro and cotija.
Notes
Pro Tip: substitute or add any additional vegetables you would like that you have on hand.