Vegetarian No-Chicken and Dumplings

INGREDIENTS

1 tbsp

baking powder

2 cups

(about 8 1/2 oz.) plus 2 Tbsp. unbleached all-purpose flour, divided

1 cup

whole milk

2 tbsp

unsalted butter

2 cups

thinly sliced sweet onion

4 cups

unsalted vegetable stock, divided

8 cups

chopped yellow squash (2 lb.)

2 tsp

kosher salt

1 cup

finely chopped carrots

1 cup

frozen peas, thawed

1 cup

fresh corn kernels

1 tbsp

chopped thyme

1 tbsp

thinly sliced chives

1 tsp

black pepper