Monterey Jack Cheese Soup Recipe

Melt butter and stir in flour. Cook over low heat, stirring constantly, for 1 minute. Whisk in 1 1/2 cups milk. Cook and stir until thickened. Set aside. Combine onion, tomatoes, chilies, garlic, and broth. Cook over medium heat 3 to 5 minutes. Remove from heat. Gradually stir the white sauce into this tomato mixture. Return to low heat and add remaining milk, salt and pepper. Stir in cheese. Cook while stirring until cheese melts.