For Cornbread Muffins
Combine cornbread mix, milk, egg, and butter and spoon into greased muffin tin to make 12 muffins.
Bake at 400 for 15 minutes or until golden. Set aside to cool.
For Chili
Set Instant Pot to saute, add oil, then add red and green onions, tomatoes, and chili pepper until lightly browned.
Add remaining ingredients and set on pressure (stew) for 15 minutes.
OR place all ingredients in a slow cooker for 4 hours on high.
OR if you have neither of these you can simmer on low for 45 minutes!
Using a sharp knife, carve a hole into each muffin to create cups.
Fill each cup with chili, top with cheese, and serve!