Melt butter in dutch oven over medium-high heat Add carrots and mushrooms until cooked about 5 minutes Add onion and garlic to the pot and cook about 5 minutes
Toss in the sage and cook until it releases it's scent about 1 minute Sprinkle flour over the softened vegetables. Stir to coat. Cook, stirring until the flour has cooked, about 3 minutes
Add chicken to the dutch oven and stir to coat with vegetables Pour in chicken stock, bring to a slight boil, and turn down the heat to medium-low Simmer the stew until the chicken is tender and cooked through about 7 to 8 minutes
Using an ice cream scoop, spoon out 8 equal balls of biscuit dough Plop them on top of the chicken, distributing evenly. Cover the dutch oven with a lid and simmer until the dumplings have steamed evenly about 15 minutes
Turn on the broiler and put the chicken and dumplings under the hot broiler until the tops of the dumplings turn brown