- STEP 1
Heat the olive oil in a non-stick skillet over medium heat. Add the onion and cook until the onion becomes tender, about 4 minutes. Add the garlic and cook 1 minute more.
- STEP 2
Turn the heat up to medium-high. Season the chicken with salt and pepper and add it to the skillet. Saute the chicken until it is golden brown on all sides, about 4 minutes.
- STEP 3
Quickly add the chicken broth and stir with a wooden spoon to release any caramelized bits that are stuck to the pan. Cook until the chicken broth has reduced by half. Stir in the mustard.
- STEP 4
Serve with mashed potatoes.