In a medium pan heat olive oil over medium heat. Add sausage and cook until browned on all sides (about five minutes).
Add in chopped onion and saute together with meat for 3 minutes.
Remove from heat and add the white wine, soy sauce and siracha. Add the broccoli and place back on the heat until it begins to boil.
In a small bowl mix brown sugar with warm water, add to the stir fry. Cook one minute and add the cornstarch. Bring back to a boil and remove from heat.
Serve over rice or noodles and Enjoy!