Heat olive oil in a large skillet over medium-high heat.
Add the lean ground turkey and cook until browned, breaking it up with a wooden spoon as it cooks (about 5-6 minutes).
Add onions and tomatoes. Cook untill onions soften
Stir in the taco seasoning and rinsed black beans. Lower heat to medium and let simmer for 2 minutes until everything is well incorporated and warmed through.
Sprinkle the shredded cheese over the top, cover the skillet with a lid for 1 minute until the cheese is completely melted.
Serve immediately over a bed of cauliflower rice or fresh mixed greens.