• Pre-heat oven to 350 degrees F.
• Remove stems and carve out insides of mushrooms so that they are hollow. Line a baking sheet with foil, spray with non-stick cooking spray, and line mushroom tops on top.
• Place spinach and artichoke hearts in a pot with 1/2 cup of water and bring to a rolling boil. After reaching a rolling boil, reduce heat and simmer for about 5 minutes until spinach wilts and remove from heat and drain.
• Add spinach and artichokes back into same pot on low heat. Add cream cheese, greek yogurt, mayo, red pepper flakes, salt and pepper. Stir until well combined.
• If mix is runny, stir in flour in 1/2 teaspoon increments to thicken it up. You should not use more than 2 tsp of flour.
• Once mix is thick and goopy, fold in 1/4 cup of parmesan cheese.
• Spoon mix into mushroom tops, sprinkle remaining parmesan cheese on top and bake for 15-20 minutes at 350 degrees. When tops begin to turn golden brown, turn oven on broil. Leave tops in oven for 2 minutes, until cheese on top melts.
• Remove from oven, let cool for 3 minutes, and enjoy!