Vegetarian Skillet Chili Recipe (with Video)

Ingredients

• 1 lime
• 1 red onion or shallot, thinly sliced
• Large pinch of kosher salt
• Small pinch of granulated sugar
• Olive or grapeseed oil
• 1 large onion, chopped
• 3 garlic cloves, or to taste, minced
• 1 teaspoon chile powder, plus more to taste
• 1 teaspoon dried oregano, plus more to taste
• 2 (15-ounce) cans beans, drained
• 1 (15-ounce) can diced tomatoes with their juices
• Kosher salt
• Fresh cilantro, diced avocado and sour cream, for garnish (optional)