Prepare the vegetables for the chicken pot pie by first peeling and then dicing your potatoes and carrots. Next, chop up the onion and celery, and mince the garlic.
To a large pot, add the butter and melt over medium heat. Once melted, add your onion, celery and garlic.
Saute until onions are becoming slightly clear, and then add the potatoes and carrots.
Stir the potatoes and carrots around for a minute before adding the chicken broth to the pot.
Add in the salt, pepper, sage and parsley with the chicken broth and vegetables. Cover the pot, and turn up the heat to medium high.
Bring broth and vegetable mixture to a boil, until potatoes and carrots are cooked (fork tender). Reduce the heat to medium.
Add in the peas and chicken.
To thicken your pot pie filling, mix in the 5 Tablespoons of flour and stir until thickened.
Pour the chicken pot pie filling into a 9 x 13 pan, and prepare the biscuits to put on top.
Biscuits: Preheat the oven to 450 degrees.
Mix the flour, baking powder, and salt in together in a large bowl.
Add the butter to the flour mixture. Cut in the butter with a pastry blender, until butter is the size of small peas.
Make a well in the ingredients, and add in the milk.
Combine the milk with the ingredients, until flour is just incorporated.
Lightly flour your countertop surface, and turn out your biscuit dough onto it. Knead 1-2 times before patting it into a rough rectangle. Fold into a letter shape, turn half a turn, and pat into a rough rectangle again.
Repeat the letter folding and patting two more times. After the third time, roll your biscuit dough out to 1/2 inch thick.
Cut out the biscuits with a biscuit cutter and place on chicken pot pie filling.
Bake at 450 degrees for 12 minutes.
Serve and enjoy!