INGREDIENTS
For the Dough:
1 lb
puff pastry, homemade or store-bought
1 tbsp
butter
For the Egg Wash:
1
egg
1 tbsp
milk
For the Filling:
12
eggs
2 tbsp
dijon mustard
1 tbsp
butter
1/4 cup
milk
1/4 tsp
salt
1 lb
fresh spinach (or a 10-oz. bag of frozen spinach)
About 6 large roasted red peppers (a 12 oz jar)
12 oz
real Swiss (Emmental) cheese, sliced thinly