Cook rice or quinoa according to package instructions.
In a skillet, heat oil and cook the protein until fully cooked.
Season the protein with taco seasoning to taste.
Rinse and drain black beans.
Prepare the fresh toppings: dice tomatoes, slice avocado, shred lettuce, and cheese.
Assemble the bowls by adding a base of rice or quinoa.
Layer the cooked protein over the grains.
Add black beans, diced tomatoes, and shredded lettuce.
Top with avocado slices, cheese, salsa, and sour cream.
Garnish with fresh cilantro before serving.