Root Vegetable Pan Roast with Chestnuts and Apples

INGREDIENTS

Apples, large tart

Beets, medium

Red onions, medium

Sweet potatoes, large

1 tbsp

Thyme, leaves

1/2 cup

Chicken or vegetable stock or canned low-sodium broth

1 tbsp

Maple syrup, pure

Salt and freshly ground pepper

1/2 cup

Cider vinegar

1/4 cup

Olive oil, extra-virgin

2 tbsp

Butter, unsalted

1 cup

Vacuum-packed whole chestnuts (6 ounces)