Cajun Black Bean Chili

• 28 oz diced tomatoes
• 10 1/2 oz cream of mushroom soup
• 5 cups cooked black beans
• 2 tablespoons butter
• 1/4 cup rice vinegar
• 1 tablespoon minced garlic
• 1 small diced onion
• 1/2 cup milk
• 1 teaspoon salt
• 4 teaspoons Cajun seasoning
• 1 teaspoon crushed red pepper flakes
• 3 dashes thyme

simmer for an hour