With chicken and vegetables in a creamy broth, this chicken pot pie soup has all of the flavor you love from the comfort-food classic in cozy soup form.
Peel and dice the potatoes. Place in a bowl and cover with cold water. Set aside to soak while you continue the recipe.
Clean the mushrooms. Cut smaller mushrooms into quarters and larger mushrooms into sixths or eighths.
In a large dutch oven or heavy-bottomed pot, heat 1 tablespoon of the olive oil over medium-high heat. Add the mushrooms along with a pinch of salt. Saute until the mushrooms have reduced in volume and are golden brown. Remove from the pot and set aside.
Return the pot to medium heat and add the remaining 2 tablespoons of olive oil and the butter, along with the diced onion and carrot. Cook, stirring occasionally, until the onion starts to soften and turn translucent, about 5 minutes.
Add the garlic and cook 1 more minute. Add the flour, stirring to coat all of the vegetables. Cook for 1-2 minutes, stirring constantly, then slowly stir in the chicken stock.
Drain the potatoes; add them to the pot along with the salt, pepper, and thyme. Bring the mixture to a simmer. Allow to simmer for about 15 minutes, stirring occasionally, until the potatoes are cooked through and tender.
Add the corn, peas, chicken, sauteed mushrooms, and cream. Cook for another 5-10 minutes, stirring occasionally, until hot. Taste and add additional salt and pepper as desired.
Garnish with fresh parsley for serving, if desired. Serve hot alongside biscuits.