Cut sirloin into bite sized pieces (about 3/4 inch).
Heat a little olive oil in a skillet over medium high heat.
Cook sirloin until browned (about 5-10 minutes)
In a bowl, conbine remaining ingredients and whisk until blended.
Add liquid to skillet and bring to a boil.
Reduce heat to medium low and allow to simmer until sauce is thickened and meat is tender.
Serve over mashed potatoes or egg noodles.