Scoop the avocado into a bowl and mash it with lemon juice, salt, and garlic powder until creamy but slightly chunky

Heat olive oil in a nonstick pan over medium heat until it shimmers lightly

Crack the egg into the pan and cook until the whites are set and the yolk reaches your preferred doneness

Sprinkle black pepper over the egg while it cooks to enhance the aroma

Spread the mashed avocado evenly over one slice of toasted bread, creating a thick, smooth layer

Place the warm egg on top of the avocado, allowing the heat to slightly soften the spread

Add chopped scallions over the egg for a fresh, mild bite

Top with the second slice of toast and gently press to hold everything together

Slice in half and serve immediately while warm and fragrant