In a mixing bowl whisk 6 eggs until beaten. Add quinoa, milk, salt and pepper and whisk until combined.Gently mix in spinach, tomatoes and ½ cup shredded cheeseSpray crock well with nonstick sprayAdd egg and quinoa mixture to crockTop with Parmesan cheeseCover and cook on high for 2-4 hours until eggs are set and edges are lightly browned