Heat grill to medium-high heat.
Spray or brush avocados with avocado oil or olive oil.
Place avocados on grill flesh-side down for about 3-4 minutes, until grill marks appear. Remove from grill with tongs and let cool.
Peel and scoop flesh out and into a medium bowl. Add lime juice and gently mash avocado until it's at your desired consistency.
Mix in chopped garlic, habanero, cherries, and feta cheese.
Add salt and pepper to taste.