Bring potatoes and carrots to a boil in salted water and boil approximately 10 minutes until tender but not mushy.
In a 12” ovenproof skillet melt the butter over medium heat.
Add in the onions and celery. Cook until softened.
Add in the wine and let simmer 2-3 minutes.
Stir in the flour and cook 2-3 minutes.
Add in the thyme, sage, parsley, salt and pepper.
Add in the broth, milk and cream.
Stir, bring to a boil and let simmer until thickened.
Stir in the turkey and the peas.
Remove from the heat.
When ready to cook, top the entire skillet with puff pastry, either as an entire sheet with a few slits cut into it, sealing the edges, or as I’ve done, cut the pastry into smaller pieces and cover the entire skillet.
Brush with egg wash and bake at 400 degrees for 30-40 minutes.