Preheat your oven to 425°F (220°C) to create the perfect roasting environment for the vegetables.

In a large mixing bowl, toss tomatoes, habaneros, and onion with avocado oil until well-coated.

Spread the vegetables evenly on a baking sheet and place in the oven to roast for about 25 minutes.

Once roasted, allow the vegetables to cool slightly then blend with mangos, cilantro, lime juice, salt, and garlic powder until smooth.

Transfer the salsa to an airtight container and chill in the refrigerator for at least two hours before serving.