Sausage Stir-fry Breakfast

1-2 Tsp Olive Oil
½ Cup diced onion
½ lb sausage (no nitrates)
4 cups spinach (or other greens)

Add olive oil to skillet. Heat over medium. Add diced onions, sauté until soft. Add sausage, cook until brown. Add greens, reduce heat to medium low and cover. Serve when greens are wilted and soft. May also top with 1-2 eggs over easy or salsa.