Melt butter over medium heat. Add onion and garlic. Cook about 5 minutes. Add milk and soup, stirring well to blend. Add whole kernel corn, vegetables, and cheese. Stir until smooth. Season to taste. (I use about 3/4 teaspoon Cajun Seasoning). Cook on low (simmer) about 1 1/2 hours, stirring occasionally to keep from sticking. Makes about 2 quarts.