Slice meat into strips. Add with onion to skillet & season with garlic powder, black pepper & soy sauce to taste. Be careful of the saltiness of the soy sauce. Sautee on low till meat is done & onion is tender.
Remove meat & onion from pan, add 2 cups of broth & bring to a simmer, stirring to remove bits from bottom of pan.
Whisk together contents of ramen seasoning packet, 1 cup of broth and cornstarch till smooth.
Add cornstarch mixture to pan slowly stirring constantly till thickened to your liking.
Steam veggies till crisp-tender. Fold meat & veggies into sauce mixture to coat. Serve on top of rice or noodles.