Heat a pan over medium heat. Add butter and once it melts add bread. Toast the bread on each side for about 2 minutes then remove.
Add the bacon slices to the pan and cool until crispy, about 3 minutes per side.
Remove the bacon and crack the eggs into the pan. Fry both eggs, making sure the yolks are still slightly runny.
Slice the tomato and smash the avocado in a small bowl.
To assemble, spread avocado onto the bread, then top with tomato slices, bacon, egg, arugula, and another slice of bread! Right before serving, drizzle with maple syrup. Enjoy!