1. Heat oil in medium high heat. Add onions. 2. Cook onions about 5-7 minutes until translucent then add garlic. Cook for 1 minute. 3. Add beef, cook, stirring for about 3 minutes, then add mushrooms and zucchini. Let cook about 4 minutes, stir occasionally. 4. Add parsley and salt & pepper to taste. 5. Add wine to the pan and let boil. Turn down heat and let simmer for about 10 minutes. 6. Divide spinach evenly on top of everything else, cover pan and cook for another 6-8 minutes. (If you prefer the spinach to be somewhat salty, sprinkle coarse salt on spinach to taste). 7. Best serve with buttered rice :)