Broccoli Cauliflower Cheese Casserole

Preheat oven to 350 degrees. Steam veggies until tender.

Saut onion with garlic and 1 Tbsp olive oil until translucent then set aside in a bowl.

Wipe out hot pan in preparation for sauce. 1 Tbsp olive oil over medium heat. Add cheddar cheese and let melt.

Add salt, pepper, xanthum gum, parmesan cheese, mustard and milk. Stir with whisk to form sauce. Add butter. Continuously whisk.

Put olive oil on bottom of 9x13 Casserole pan. Mix veggies, chicken, onions and sauce and put in casserole pan. Put 1 cup Cheddar Cheese and 1/2 cup Parmesan Cheese on top and bake for 1/2 hour until brown and bubbly.

Add or take away cheeses to taste.