Brush bread slices with olive oil or butter and toast until golden and crisp using toaster, oven, or skillet.
Cut avocados in half, remove pits, and scoop flesh into a bowl.
Mash avocado lightly with a fork; season with salt, pepper, and optional lemon or lime juice.
Cook eggs as desired: fry in skillet until whites are set, poach gently in simmering water with vinegar, or scramble until fluffy.
Spread mashed avocado evenly on each toast slice.
Layer crispy bacon slices over the avocado.
Top each toast with a cooked egg.
Season with extra salt, pepper, and optional red pepper flakes, everything seasoning, or hot sauce to taste.
Serve immediately while warm.