Melt butter in a large pot or Dutch oven until foamy. Stir in carrots, celery and onions. Sauté for 5 minutes until starting to soften.
Sprinkle in flour and stir to coat all the vegetables. Cook for 2 minutes, stirring often.
Over medium heat, slowly add one cup of hot chicken broth stirring constantly until mixture comes to a boil (mixture will be very thick).
Add another cup of broth and stir until smooth and the mixture comes to a simmer. Repeat with remaining broth.
Reduce heat to low and add potatoes, herbs, salt and pepper. Simmer, partially covered for 10-12 minutes until potatoes are almost tender (this will depend on the size of your diced potatoes).
Preheat oven to 425°F.
Meanwhile prep the puff pastry dough if you have purchased unrolled. Dust your work surface with flour and roll pastry to 13"x9" rectangle or large enough to overhang your casserole dish. Dough should be 1/8"-1/4" thick.
Stir turkey and peas into the stew and adjust to taste with salt and pepper. Pour mixture into a greased 12"x8" or 2-quart equivalent casserole dish.
Drape rolled puff pastry over the casserole, pressing the overhang onto the edge of the dish.
Whisk egg and cream together in a small bowl and brush evenly over puff pastry.
Cut 6-8 slits in the puff pastry to allow steam to escape. Bake for 30-35 minutes until golden and pastry is cooked through. Remove from oven and serve immediately.
-It's important to use hot chicken or turkey broth. Pouring cold liquid into the hot flour mixture will cause the flour to congeal and you will have lumps in your sauce. Using hot broth maintains a steady temperature of the mixture allowing all flour particles to become incorporated before the flour cooks.
-Flour does not reach its full thickening capacity until it comes to a full boil.
-Use pre-rolled puff pastry dough for more convenience.
-Be sure to leave an overhang of puff pastry. If you don't the stew will bubble up over the pastry, preventing it from cooking properly.
Heat broth to a simmer in a small pot. Stir in quinoa, reduce heat to a steady simmer, cover and cook for about 18 minutes (I find cooking quinoa in broth takes a few minutes longer than just water). Remove from heat and allow to rest for 5 minutes.
In a small bowl whisk together 1 tbsp olive oil, lemon juice, mustard, half of the thyme, salt and pepper. Set aside.
In a medium skillet, heat 1 tbsp of olive oil. Once hot, add mushrooms and cook on medium highfor 3-4 minutes until starting to turn golden. Stir and continue to cook for about 2 minutes. Add garlic, shallots and half of the thyme. Cook, stirring often until garlic and shallots have softened, another 2-3 minutes.
Fluff quinoa with a fork and add to mushrooms, stirring to combine. Season lightly with salt and pepper.
Add arugula and sauté for 1-2 minutes until starting to soften and wilt. Remove from heat and stir in dressing. Divide into 2 bowls and top with grated parmesan cheese and toasted nuts.
I used pine nuts here, but cashews are also wonderful. To quickly toast nuts, heat 1 tsp of olive oil in a small pan over medium heat. Add nuts and toss or stir occasionally until golden.
Heat a large skillet over medium heat. If using bacon, add to skillet and cook until crisp and fat has rendered. Scoop out the bacon to a paper towel-lined plate. Remove all but a tablespoon of fat.
If not using bacon, heat olive oil in a large skillet over medium heat.
Add shallot and garlic and sauté, stirring often until starting to soften about 3 minutes. Add mushrooms and continue to cook until most of the moisture has cooked out about 8-10 minutes.
Add wine, thyme, salt and pepper and cook until the wine has cooked out about 3 minutes.
Stir in cream cheese, 1/4 cup of Gruyere and bacon (if using).
Preheat oven to 425℉ and lightly spray a 4 3/4"- 5 3/4" x 14" tart pan with removable bottom. Fit puff pastry into the tart pan and trim the top so it is level with the pan. You will need to cut the puff pastry sheet in two pieces to make it fit.
Spread filling evenly into pastry shell and sprinkle with remaining 1/4 cup of grated gruyere. Bake for about 25 minutes until golden and filling is bubbly.
Allow tart to rest for a couple of minutes prior to removing the outer pan. Cut into wedges, garnish with fresh thyme and serve immediately.
The tart can be assembled up to a day in advance and kept covered and chilled until ready to bake.