Place them on a baking tray and bake as directed until golden brown and well risen.
Meanwhile, heat the butter in a frying pan.
Add the shallot and thyme, then fry over gentle heat until soft.
Add the mushrooms and cook for about 5-10 minutes over medium heat, stirring occasionally to prevent sticking.
Add the chopped garlic and cook for a few more minutes.
Stir in the double cream and simmer until the mixture thickens.
Season with salt and pepper to taste.
Split the baked pastry in half horizontally.
Spoon the mushroom mixture onto the bottom half of each puff, sprinkle with chopped parsley, and top with the pastry lid.
Notes / Tips / Wine Advice:
Serving Tip:Serve as a light appetizer or a delicious snack with a side of salad.Wine Advice:Pair with a crisp white wine, such as Sauvignon Blanc, or a light sparkling wine to complement the creamy mushroom filling.