How to Make It
Preheat oven to 400°F. Place spinach on a paper towel; squeeze over a sink to remove as much liquid as possible. Stir together spinach, artichokes, cream cheese, mayonnaise, mozzarella, Parmesan, garlic powder, black pepper, and crushed red pepper in a large bowl using a wooden spoon until thoroughly combined. Spoon mixture evenly into 6 (8-oz.) ramekins.
Stir together panko and melted butter in a small bowl until combined. Sprinkle mixture evenly over ramekins.
Arrange ramekins on a baking sheet. Bake in preheated oven until tops are bubbly and golden brown, 20 to 25 minutes. Let cool 5 minutes. Serve with pita chips, broccoli, and radishes.
Alternatively, you may bake the dip in an 8-inch square glass baking dish. Increase the bake time by 5 to 10 minutes, as needed.