Preheat the oven to 400 degrees F (200 degrees C). Lightly grease a baking tray.
Lay puff pastry out on a lightly floured surface and cut into 8 squares. Prick the squares in several places with a fork. Place the puff pastry squares on prepared baking sheet.
Bake puff pastry squares for 7 minutes. Remove tray from the oven; flatten squares using the backside of a spatula. Return puff pastry to the oven to bake until golden brown, about 5 more minutes.
Meanwhile, melt butter in a skillet over medium-high heat. Add mushrooms and garlic; cook and stir until mushrooms are tender, 5 to 7 minutes. Remove from heat.
Top baked puff pastry squares evenly with mushroom mixture; crumble goat cheese over mushrooms and sprinkle with parsley. Serve warm.
Notes
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.