Chicken Pot Pie Casserole
Filling
- 3 cups rotisserie chicken
- 4 cups chicken broth
- 4 tablespoons butter
- 1 small yellow onion finely diced
- 2 ribs celery diced
- ¾ cup carrots diced
- 3 cloves garlic minced
- ½ teaspoon EACH: dried thyme, rosemary, parsley
- ¼ teaspoon EACH: ground sage, black pepper
- 1 teaspoon Worcestershire sauce
- 1 teaspoon Dijon mustard
- 1/3 cup flour
- ¾ cup heavy cream can sub half and half
- 1 chicken bouillon cube
- 1 large Yukon Gold potato
- Salt/pepper
- ¾ cup frozen peas
- Shredded cheddar cheese (optional)
Biscuit Topping
- 2 cups all-purpose flour
- 2 teaspoons baking powder
- ½ teaspoon baking soda
- ¾ teaspoon salt
- 1/2 cup (or 1 stick) cold butter
- ½ cup sour cream
- ¼ cup milk
Egg Wash
- 1 egg beaten
- 1 tablespoon milk
Make the Filling
Melt the butter in a wide, high-walled skillet over medium heat. Add the onions, carrots and celery and soften for 6 minutes, stirring frequently. Add the garlic, thyme, rosemary, parsley, sage, pepper, Worcestershire sauce, and Dijon and cook for 2 minutes.
Add the flour and cook for 2 minutes, stirring continuously.
Add 2 cups of the chicken broth in small splashes, stirring continuously. Add the heavy cream in the same manner, followed by the bouillon cube.Reduce heat to medium-low.
Peel the potatoes and cut into ½ -inch chunks.(Smaller cubes ensure they cook through.) Season lightly with salt and pepper and add them to the filling. Bring the liquid to a boil, then reduce to a simmer.
Submerge the potatoes in the liquid and simmer gently for about 20 minutes, uncovered. Stir regularly to lift any ingredients settling to the bottom. Add more chicken broth in small splashes throughout cooking to control the consistency of the filling. You may choose to use it all, little by little as it thickens and reduces.
Once the potatoes are fork tender, add the peas and cooked chicken and simmer for 3 more minutes.
Transfer to a lightly greased 9 x 13-inch casserole dish. It will thicken a little more upon standing.sprinkle with shredded cheese, if desired.
Make the Topping
Preheat oven to 400° F.
Combine the flour, baking powder, baking soda, and salt in a large bowl.
Cut the cold butter into small cubes and add it to the bowl with the dry ingredients. Use a pastry cutter or the back of a fork to work it until coarse crumbs form.
Add the milk and sour cream. Use a silicone spatula to gently stir until just combined. Don’t overmix. It should be crumbly.
Take small handfuls of the dough and arrange it over the filling, covering up most of the top. (It’s best for this to look rustic and not perfect!)
Whisk together the egg and the milk and use a pastry brush to brush a light layer over the top.
Bake
Bake uncovered for 30 minutes, until the top is golden, the filling is hot and bubbly, and a toothpick comes out clean when inserted into the biscuit topping.
Let cool for 5 minutes prior to eatingn.