In a small bowl, whisk together first 6 ingredients (beef broth through pepper) until well blended; set aside.
Heat the olive oil in a skillet over medium-high heat. Add beef cubes and sauté for 5 minutes or until browned; remove from skillet and set aside. Add broccoli to the skillet and sauté for 3 minutes.
Add water and snow peas; reduce heat, cover and simmer for 4 minutes. Return beef to the skillet along with the broth mixture.
Bring mixture to a boil and cook for 2 minutes, stirring gently.