Combine eggs, salt and pepper in a medium-sized bowl. Beat with a fork until combined but not too frothy.
Melt a little butter (1 or 2 tsp.) over medium-high to high heat. Pour the egg mixture into the skillet and without moving the skillet, allow the eggs to set on the bottom (this should only take a few seconds)
As eggs set, take a spatula and push the edges of the egg mixture in, allowing the uncooked eggs on top to flow underneath and make direct contact with the skillet. Repeat the procedure at various spots around the edge of the setting egg mixture.
Add black beans, tomatoes, and onion. When eggs are set but still shiny, remove the omelet from the heat. The whole process should take just 2 or 3 minutes.
Fold the omelet in half and slide it onto a warm plate. Drizzle Terrapin Ridge Farms Spicy Chipotle Sauce over the omelet and serve!