4 tablespoons oil, divided (I use light olive oil)
4 yellow onions
2 Tablespoons whole grain mustard
1 Tablespoon minced garlic (about 4 cloves)
2 large apples, such as Fuji
2 cups apple cider
1/2 cup chicken broth
1 Tablespoon cornstarch
2–3 sprigs of thym, or 1 1/2 teaspoons dried
Instructions
Trim chicken breasts, and split lengthwise in half so that chicken is about 3/4 inch thick.
Heat 1-2 tablespoons oil a large skillet over medium heat, and saute chicken 4-5 minutes on each side, until just done through, sprinkling with salt and pepper as they cook
Remove from pan, and let rest on a plate.
Peel onions, and cut in half from stem to root end, then cut into half rounds, about 1/4 inch thick (this can be done while chicken is cooking.
Add remaining oil to skillet, and place onions in.
cover with a lid, and let sweat for about 10 minutes, stirring occasionally.
Add a tablespoon or two of water as needed to keep the onions from sticking to the pan as they cook.
While the onions are cooking, core apple, and slice into 1/4 inch thick pieces.
When onions have turned a light caramel color, and are starting to get jammy, add mustard, garlic, and apples.
Continue to cook, stirring frequently for another 3-4 minutes, until onions are a deeper caramel color.
Stir in apple cider, and bring to a simmer.
Combine chicken broth and cornstarch together stirring all the lumps out of the cornstarch.
Stir into onion mixture.
Add chicken to the skillet, spooning some of the onions and apples over the chicken
Top with 2-3 sprigs of thyme
Bring back to a simmer, and cook until sauce has thickened somewhat, and chicken is heated through