Black Bean Skillet Dinner

For the Lime Crema:

• zest of 1 lime
• 1 clove garlic, minced
• 1 cup plain Greek yogurt or sour cream
• Pinch of kosher salt

For the Pickled Onions:

• Juice of 1 lime
• 1 small red onion, very thinly sliced
• 1 teaspoon granulated sugar
• 1/4 teaspoon kosher salt

For the Beans:

• 1 1/2 tablespoons olive oil
• 1 small yellow onion, diced
• 1/2 red bell pepper, seeded and diced (about 1/2 cup)
• 1/2 green bell pepper, seeded and diced (about 1/2 cup)
• 1 small jalapeno, seeded and finely chopped
• 1 clove garlic, minced
• 2 teaspoons dried oregano
• 1 teaspoon chili powder
• 2 15 oz cans black beans, rinsed and drained
• 1 15 oz can diced tomatoes, with their juices
• 1 teaspoon kosher salt
• Sliced avocado and fresh cilantro leaves-for serving