Created by KarenSTL on July 7, 2018
Step 1: Preheat oven to 350 degrees.
Step 2: Cook spinach in the microwave until thawed, approximately 4-5 minutes per 10 ounce package. Place spinach in strainer and using a large spoon, press out as much moisture as possible.
Step 3: Saute mushrooms in skillet in 2 tbsp of olive oil over medium heat until lightly browned. Remove from heat.
Step 4: Combine mayonnaise, sour cream, and 2/3 cup Parmesan cheese. Stir in drained spinach, mushrooms and artichokes.
Step 5: Spray 9 x 13 glass baking dish with cooking spray.
Step 6: Pour spinach mixture into baking dish and spread evenly.
Step 7: Melt butter with remaining 2 tablespoons of olive oil in skillet (you can use the same skillet used for the mushrooms). Remove from heat and add bread crumbs, stirring until they are coated. Add 1/3 cup Parmesan cheese and stir.
Step 8: Sprinkle bread crumb mixture over the spinach.
Step 9: Bake for 20-25 minutes.