01 -
Get your oven nice and hot at 375°F (190°C). While you're at it, grab a baking sheet and line it with some parchment paper.
02 -
Start by warming up olive oil and butter in a skillet. Toss in those chopped shallots until they're soft and translucent (about 2-3 minutes). Add the garlic and let it get fragrant for a minute. Then throw in your mushrooms and cook until they're tender and all the liquid has evaporated (5-7 minutes). Season with salt and pepper, then let it cool down a bit.
03 -
Dust your counter with some flour and roll out that thawed puff pastry until it's a bit thinner. Cut it into whatever shapes you fancy - squares or rectangles work great.
04 -
Load up each pastry piece with a generous spoonful of your mushroom mix, then crumble that creamy goat cheese all over the top.
05 -
Fold the edges of your pastry over to make rustic-looking tarts. Brush some beaten egg on the exposed pastry to give it that gorgeous golden finish.
06 -
Pop these beauties in the oven for about 20-25 minutes, or until they're puffy and golden brown.
07 -
Sprinkle some fresh thyme on top and let them cool for a few minutes before serving.