Spinach and chicken stir fry in tomato sauce

Preheat oil in a skillet over medium-high heat; stir fry the onions until translucent.

Add the chicken with the salt and pepper and stir fry about 5 minutes, until browned.

Add the tomato sauce and cook another 5 minutes.

Add the spinach a little at a time if the pan is small; stir until all wilted, about a minute.

Remove from the heat immediately so the spinach does not brown; serve over pasta, quinoa, couscous, yam or fried plantain.