In a cast iron skillet, melt the butter over medium heat. Once fully melted, turn the heat down low and whisk in the flour. Add the half and half ¼ cup at a time until the mixture is smooth and thick.

Turn the heat up to medium-low, add in the cream cheese, Worcestershire sauce, and dijon mustard. Stir until the cream cheese is fully melted.

Add a few handfuls of spinach at a time and stir until first batch wilts. As the spinach wilts, add a little more in the pan at a time. Mix the spinach until its's evenly coated.

Turn heat to low and stir in the artichoke and crab meat. Carefully stir until the crab and artichokes are covered. Try not to break up the lumps of crab meat or the artichokes.

Turn the flame off and stir in the parmesan and mozzarella cheeses.

Transfer the crab and spinach dip to a baking dish or leave it in the cast iron skillet. Place under the broiler for 5-6 minutes, or just until the cheese is slightly browned on top.

Top with chives. Let the dip cool just slightly and serve with crostini, crackers, or warm bread. Enjoy!