Like most classic one-pot meals, each step builds on the last. Once an ingredient goes into the pot, it doesn't come out until the dish is ready for the plate. Turkey pot pie is prepared in two steps. First you cook the stew and build a savory sauce to bind all of its elements. You then top the pie with biscuit dough or puff pastry.
Pot pie is the fruit cobbler of meat and vegetable stews for Dutch oven cooks.
Like many recipes, pot pies easily lend themselves to personal tastes. I used a package of frozen peas and carrots for my test run. But since peas aren't one of my favorite vegetables, I usually use carrots and mushrooms. Other combinations, like broccoli and cauliflower, work just as well. Pot pies need a thick sauce to bind the meat and vegetables into a spoonable stew.