Optional additions - however you like! sour cream sliced green onions chopped fresh cilantro or parsley chopped tomato sliced black olives
Combine first 3 ingredients in a medium saucepan, bring to a boil. Reduce heat and simmer 5 minutes. Spread one-third of bean mixture in a 2-quart microwave-safe dish coated with cooking spray. Arrange half of tortillas over bean mixture (you may need to cut them to get them to cover the layer - I cut mine into quarters), top with ½ cup cheese. Repeat layers once, top with remaining bean mixture and cheese.
Cover with heavy-duty plastic wrap, and vent. Microwave at HIGH 4-5 minutes or until cheese melts. Top with the optional ingredients to your taste!