Spinach artichoke dip

Name: Spinach artichoke dip
Cuisine: American
Ingredients: @theshayspence:2 Tbsp. olive oil; 2 (10-oz.) bags spinach; 1/2 cup heavy cream; 4 oz. cream cheese; 1 cup shredded mozzarella; 1 cup shredded Monterey Jack; @theshayspence:1/2 cup grated parmesan; 2 garlic cloves, minced; 3/4 tsp. seasoned salt; 1/2 tsp. black pepper; 1/2 tsp. onion powder; @theshayspence:1/2 tsp. garlic powder; 1/2 tsp. cayenne pepper; 1 can artichoke hearts, drained; More shredded cheese for the top