Place the tortilla on a cutting board and cut with a knife or pizza cutter half way up, to create a slit.
Place cheese in the bottom left quadrant of the tortilla, next to the slit. Place the scrambled eggs on the bottom right quadrant, then the avocado on the top right, and finally the spinach on the top left.
Begin folding your tortilla by folding the eggs onto the avocado, then folding over onto the spinach, and then finally folding again onto the cheese.
In a medium pan, melt butter. Place the tortilla foldover with the cheese side down and cook until golden brown and crispy. Flip and brown on the other side. Serve and enjoy!