In a large skillet, melt butter over medium-high heat. Sauté mushrooms, onion, shallot, garlic, poultry seasoning and salt for six to seven minutes. Add black pepper, thyme, rosemary and port wine cooking until all liquid has evaporated. Remove from the heat and blend in goat cheese and parsley. Cool mixture completely.
Roll out the prepared pastry to 1/8-inch thickness.
Using a round cookie cutter, cut dough into 2 1 /2-inch circles. Place 1-1 1/ 2 teaspoon of filling onto center of the dough circle. Using fingers, pinch the edges in an upward direction, forming a small, half-moon shaped tartlet. Place on baking sheet and freeze (These must be cooked from a frozen state).
If preparing well in advance, the pastries can be placed in a Zip-loc bag after frozen and held for 1-2 months in the freezer.
To bake, preheat the oven to 350 degrees. Bake for 12-15 minutes, until pastry is golden brown. Serve warm or at room temperature.
Yield 30-35 pastries