Who doesn’t love this? You just need a big basket of tortilla chips.
Mix taco seasoning with sour cream in a bowl and set aside. In a separate bowl, toss the lime juice and salt with avocados and set aside. Spread the black beans in the bottom of a 9”×9” baking dish. Top the layer of refried beans with the sour cream mixture and then spread the chiles over the layer of sour cream. Spread avocados evenly over the chiles. Sprinkle cheese, if using, and salsa over avocados. Top with fresh onions and tomatoes. Refrigerate until ready to serve.
Push the skin of an avocado to determine ripeness. If it yields slightly it is ready to use. Do not use soft or mushy ones.