Found this recipe over at Martha Stewart's and thought they sounded yummy. I really should of added a little color to the melted butter to make them even cuter :). They were good though.
1 pkg frozen puff pastry sheets
1 1/2 tsp paprika
1/4 c unsalted butter, melted
2 1/2 tbsp Dijon mustard
1 1/2 c finely grated gruyere cheese
1 c finely grated Parmesan cheese
black pepper (opt)
Generously flour 2 pieces of parchment paper, roll out one of the unfolded pastry sheet to form a 15x13" rectangle, about 1/16" thick. Repeat with other pastry sheet. Refrigerate until firm - about 15 minutes. Meanwhile, stir the paprika into the melted butter.
Remove pastry from the fridge and brush off excess flour. Spread one side of the rectangles with mustard mix and sprinkle with both cheeses. Season with pepper.
Place 2nd sheet of pastry on top then add a piece of parchment paper on top of stack. Using a rolling pin, roll until smooth and pastry layers and edges are sealed together. Remove parchment, and brush with butter mixture. Chill until firm - about 30 minutes.
Transfer puffs to wire rack, let cool slightly before serving.