Cook pasta according to package directions. Set aside.
Cut flank steak into ¼" thick x 2" long slices, against the grain, and place in a large bowl. Sprinkle with Slap Ya Mama, cumin, salt, pepper, and crushed red peppers, stir.
In a large cast iron pan, or frying pan, heat 1 tablespoon of oil over high heat.
Sear beef on both sides then remove from pan. Drain any remaining liquid. Cook in batches, if necessary.
Melt 2 tablespoons of butter over medium heat and sauté onions, mushrooms and garlic until onions are translucent and mushrooms are cooked.
Sprinkle flour over onion mixture, stir and cook for two minutes.
Slowly pour beef broth into the pan stirring constantly for a minute or two.
Next, add soup and Worcestershire sauce. Stir to combine, then add beef back into the pan. Stir.
Cook over medium heat, stirring frequently, until sauce has thickened, then remove from heat, add sour cream. Stir to combine and serve over cooked egg noodles.