Mix all sauce ingredients into a small bowl and set aside

Place diced bacon into a small pan over medium-low heat. Let cook, stirring occasionally, until crispy. This can take around 15-20 minutes, depending on the bacon.

Heat butter and olive oil in a large pan over medium heat. Fry chicken schnitzel until golden brown on both sides. This should take approx 4-5 minutes on each side. Remove and place on paper towel to drain off excess oil.

It's now time to start assembling the sandwich! Start with layering a bed of spinach leaves your sourdough bread, followed by tomato slices. This is to prevent any tomato juice from seeping into the sourdough.
Next comes the schnitzel, then pour your sauce over and spread out evenly so it coats the schnitzel. Sprinkle over with crispy bacon bits so they stick to the sauce!
Top with a layer of avocado slices and finally complete with the other slice of sourdough. Enjoy!