Favoreats
Favoreats LLC
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INGREDIENTS
2 tbsp
extra virgin olive oil (divided)
1
large yellow onion (thinly sliced)
1/2 tsp
kosher salt
16 oz
baby bella mushrooms (sliced)
1/2 tsp
minced garlic
2 tsp
finely chopped fresh thyme leaves (or 1/2 teaspoon dried)
1/4 tsp
ground black pepper
1/2 cup
shredded Swiss (Gruyere, or similar cheese (about 1 1/2 ounces))
2
, 10- inch square sheets frozen puff pastry (thawed)
1
egg (beaten)
3 tbsp
whole grain mustard
Chopped fresh parsley (for garnish)