Mix in the artichokes, spinach, cheeses, Worcestershire sauce, garlic, salt, pepper, and cayenne pepper. Taste and add more salt and pepper to taste.
14 ounces artichoke hearts, 10 ounces frozen chopped spinach, 1/4 cup parmesan cheese, 1/2 cup mozzarella cheese, 2 garlic cloves, 1/2 tablespoon Worcestershire sauce, 1 teaspoon kosher salt, 1/4 teaspoon black pepper, 1/8 teaspoon cayenne pepper