Chicken with Sherry Gravy

1 package brown gravy mix (such as McCormick) *
1/4 cup all-purpose flour
1/4 teaspoon garlic powder
Several dashes onion salt or onion powder
1/2 teaspoon salt
1/4 teaspoon pepper
1 tablespoon vegetable oil
1 pound boneless skinless chicken breast halves, cut into strips
1 medium onion, sliced and separated into rings
1/2 cup dry Sherry wine

Prepare gravy mix according to package directions; set aside.

Combine flour and seasonings in a zip-top bag; add chicken, shake to coat.

Heat oil in a skillet over medium high heat. Add chicken, cook until brown on one side, about 4 minutes; add onion. Turn over chicken pieces and cook until brown on second side and onions are soft, 3-4 minutes more.

Add Sherry to pan, stirring and scraping to loosen any bits stuck to the pan bottom. Cook for 1 minute. Add brown gravy and stir well to mix. Serve with rice or mashed potatoes.

* Choose a gravy mix that makes from 1 to 1 1/2 cups of gravy.