4-Cheese Spinach-Artichoke DipAdvertisementsAdvertisements Start Cooking (1 reviews)Prep:10 minsCook:15 minsTotal:25 mins Ingredients 2 tablespoons salted butter1 (16 ounce) bag fresh spinach, chopped½ cup chopped marinated artichoke hearts2 tablespoons diced onion1 teaspoon bottled minced garlic1 teaspoon ground black pepper½ teaspoon salt½ teaspoon red pepper flakes½ (8 ounce) package cream cheese, softened¼ cup grated Parmesan cheese2 ounces processed cheese food (such as Velveeta®), cubed2 ounces horseradish Cheddar cheeseAdvertisements Start Cooking