INGREDIENTS
2 tbsp
olive oil
8 oz
mushrooms such as cremini
1/2 cups
onion
1 tbsp
garlic
8 cups
baby spinach
6 larges
eggs
1/4 cup
milk
1/4 cup
half-and-half
1 tbsp
dijon mustard
1 tbsp
thyme leaves
1/4 tsp
salt
1/4 tsp
ground pepper
1/2 cups
gruyère cheese