1. Step 1:
Cook the bacon until crispy, wash the spinach, slice the mozzarella, and prepare the avocado.
Step 2:
I cut off the crusts of the bread because I find them too heavy... but everyone has their own preferences 🙂
Step 3:
On a slice of bread, layer the ingredients in the following order: mozzarella, avocado, bacon, and a few spinach leaves (add an extra layer of mozzarella for those who want more).
Step 4:
In a medium heat skillet, melt a knob of butter and cook the croque monsieur sandwiches until golden brown, pressing them slightly to hold their shape.