Prepare the Stew Base:
In a large Dutch oven or heavy pot, heat butter and olive oil over medium heat.
Add onion, carrots, and celery. Cook for 5–6 minutes until softened.
Stir in garlic and cook for 1 more minute.
Add Broth and Seasonings:
Pour in chicken broth, then add shredded chicken, thyme, salt, pepper, poultry seasoning, and bay leaf.
Bring to a gentle boil, then reduce heat and simmer for 15 minutes.
Make the Dumpling Dough:
In a mixing bowl, whisk together flour, baking powder, and salt.
Cut in cold butter with a pastry cutter or fork until the mixture resembles coarse crumbs.
Stir in milk until just combined (do not overmix).
Cook the Dumplings:
Drop tablespoon-sized portions of dough onto the simmering stew (don’t stir once dropped).
Cover pot with a tight-fitting lid and cook for 15 minutes without lifting the lid (this helps dumplings steam and stay fluffy).
Finish the Stew:
Remove bay leaf.
Stir in heavy cream gently. Adjust seasoning with more salt and pepper if needed.
Serve:
Ladle into bowls, making sure each serving gets tender dumplings and rich broth. Enjoy warm.