Pound chicken until flattened.
Sauté the onions then add in the spinach, then the mushrooms and cheese.
When all the veggies are fully cooked grind up in a food processor.
Take the grinded mix and mix in the almonds and egg well.
Put the mixture into each cutlet of chicken and roll it up.
Prepare a baking pan. Set up the chicken on the baking pan and coat with a thin layer of mayo each piece.
Set oven to 475 degrees and bake for 45 minutes.
Remove from oven and let cool off. Slice before serving.