Preheat the oven to 425°F (220°C).

Cut the avocados in half and remove the pits.

If necessary, scoop out some of the avocado flesh to make room for the eggs.

Place the avocado halves in a baking dish, ensuring they're stable.

Crack an egg into each avocado half.

Season with salt and pepper.

Place a small pat of butter on top of each egg.

Bake for 15-20 minutes, or until the eggs are cooked to your liking.

Remove from the oven and garnish with chives or green onions if desired.