Preheat the oven to 350°F. In a small saucepan set over high heat, bring 1 cup water to a boil, reduce the heat to a low simmer, and add the rice and butter. Cover and cook for 10-14 minutes. (It can be slightly undercooked as it will absorb more liquid while it bakes.)
Spread an even layer of the refried beans on the bottom of an 8 x 8 x 2-inch baking dish. Cover with the cooked rice.
Place the avocados in a food processor or a bowl. Add the lime juice and the essential oils and blend or mash until well combined. Spread the mixture evenly on top of the rice.
Blend the vegan mayonnaise and the taco seasoning in a bowl or food processor. Spread evenly over the avocado layer. Blend the chiles and tomatoes together in the food processor and layer them evenly over the taco seasoning, followed by a layer of black olives.
Top off with the Cheddar-style shreds.
Bake for 30 minutes-1 hour, depending on how crisp you want the cheese.
Serve with gluten-free taco chips, extra olives, and sliced avocado or over a salad.
Notes
*Great brands of dairy-free cheese include Daiya, Kite Hill, Follow Your Heart, Forager, Miyokos, So Delicious, and Violife.