Mixed Mushroom Tartlets

Directions

• In a large skillet, saute mushrooms and onion in butter and oil in batches until tender. Reduce heat to medium. Stir in wine, thyme and salt. Cook until liquid is reduced by half. Stir in cream. Cook until thickened, about 10 minutes. Remove from heat and set aside.
• Unfold 1 puff pastry sheet. Roll out into a 12x8-in. rectangle. Cut into 8 rectangles. Using a sharp knife, score 1/2 in. from the edges of each pastry (do not cut through).
• Transfer to baking sheets. Repeat with remaining sheet of puff pastry. Spoon mushroom mixture into centers. Whisk egg yolk and water; brush over pastry edges.
• Bake at 400° until golden brown, 13-16 minutes.