1 tablespoon extra virgin olive oil
1/4 cup finely chopped onion
1/2 cup chopped cooked ham
2 1/2 tablespoons red wine vinegar
1 (16 ounce) package frozen cut green beans, thawed and drained
1 tablespoon honey mustard
kosher salt to taste
Heat the oil in a large skillet over medium heat. Add the onion and ham; cook and stir until brown bits start to show up on the bottom of your pan, 5 to 10 minutes.
Mix the red wine vinegar into the pan, scraping up the browned bits from the bottom. The vinegar will evaporate quickly – don’t panic. Mix in the mustard, and reduce the heat to medium-low. Add the green beans and stir to coat. Cook just until tender but still crisp, about 5 minutes. Season with kosher salt and serve.