Merge classic egg-in-a-hole with of-the-moment avocado toast for a next-level breakfast.
Using a biscuit or cookie cutter, remove a 2 3/4-inch round from center of bread. Heat a nonstick skillet over medium; add 1/2 tablespoon butter and melt, swirling to coat pan. Add bread slice and cutout; cook until light golden brown, 3 to 4 minutes. Flip slice and cutout. Drop remaining 1/2 tablespoon butter into hole, then crack egg on top. Cover and cook until white is set but yolk is still runny, 3 1/2 to 4 minutes. Transfer to a plate. Arrange avocado over toast and season with salt and pepper; mash avocado lightly with a fork. Serve, with a squeeze of lemon.