This is one of my favorite comfort foods for breakfast or even a quick dinner. I like to make it with lime salsa. But if you're looking for something with more kick, use hot salsa or add some chipotle pepper.
Preheat broiler. In a large bowl, whisk the first 6 ingredients until blended.
In a 10-in. ovenproof skillet, heat oil over medium-high heat. Add peppers and green onions; cook and stir 3-4 minutes or until peppers are tender. Add garlic; cook 1 minute longer. Stir in beans. Reduce heat to medium; stir in egg mixture. Cook, uncovered, 4-6 minutes or until nearly set. Sprinkle with cheese.
Broil 3-4 in. from heat 3-4 minutes or until light golden brown and eggs are completely set. Let stand 5 minutes. Cut into wedges. Serve with toppings as desired.