In a medium saucepan over low-medium heat, add the remaining olive oil and onion. Cook until the onion is soft and translucent.
¼ cup finely diced white onion
Stir in the garlic and cook for 30 seconds to 1 minute until fragrant.
1 small garlic clove
Add the chopped chiles, then pour in the broth and spices. Stir to combine.
⅔ cup low-sodium chicken broth, ½ teaspoon dried oregano, ½ teaspoon cumin, ¼ teaspoon salt, ⅛ teaspoon ground black pepper
Increase heat to high, bring to a boil, then reduce to a simmer. Cook, uncovered, for 8-10 minutes until the sauce thickens.
Remove from heat and serve.