Mushroom Kale Wild Rice Casserole

INGREDIENTS

4 tbsp

butter

large sweet onions, sliced into thin rings

1 lb

cremini mushrooms, sliced

2 tbsp

olive oil

3 cloves

garlic, minced

2 tbsp

fresh oregano, minced

1/4 tsp

nutmeg

1/2 tsp

salt

1/2 tsp

pepper

1 tsp

crushed red pepper flakes

large bunches of Kale, leaves torn and stems removed

1/4 cup

flour

1 cup

milk

1 cup

vegetable broth

1/4 cup

heavy cream

4 cups

cooked wild rice

2 cups

shredded gruyere cheese