In a large pan, melt butter and sauté onion.
Stir in cream cheese and chicken.
Spray 9×11 casserole dish with Pam.
Put 3-4 tablespoons of chicken mixture in tortillas and roll up tortillas.
Place the rolled tortillas in the casserole dish.
Drizzle half-and-half over the rolled tortillas in the casserole dish.
Cover with foil and bake at 350 degrees (F) for 45 minutes.
Uncover burritos and sprinkle cheese over top. Bake for another 10-15 minutes or until cheese is melted.
To serve, use a knife and go around the outside edges. Cut burritos in half to make 16 servings.
Side items that work well with this dish are homemade salsa, black beans, guacamole, and yellow rice.