To spinach, add artichoke, sour cream, ½ cup Parmesan cheese, and breadcrumbs in a large bowl. Season with dash of salt and ½ teaspoon pepper.
While mushrooms are cooking, boil 2 cups of water + 1 tsp. salt + ½ tsp. minced garlic. Once it comes to a light boil, reduce heat to a simmer and start to pour the corn meal in slowly in a stead stream into a whisk while whisking constantly to prevent cornmeal from clumping. Continue to whisk steadily for 2 minutes until it starts to thicken. Continue to whisk every 2-3 minutes for the next 15minutes. Then turn off heat, add butter and stir to combine, then cover pot with a lip and set aside off the heat.