Ingredients:
- 2 sheets of ready-made frozen puff pastry, thawed according to instructions
- 2 generous tbsp butter
- 3 large white onions, peeled, halved, and sliced thinly
- 3 large eggs
- 1 cup cream
- salt and freshly ground black pepper to taste
- pinch of freshly ground nutmeg
- 1/2 cup fresh ground mild flavored cheese, such as gruyere, asiago, or mild cheddar
- 1 lbs of mildly flavored fish fillets, I used wild tuna, cut into 1/2″ thick chunks