Start by setting your oven to 350 degrees Fahrenheit. Let it warm up while you prepare the dip. This ensures the dip cooks evenly. A hot oven is key for getting that beautiful golden top.

Open the can of artichoke hearts and drain all the liquid. Place them on a cutting board. Use a sharp knife to chop them into bite-sized pieces. Do not make them too small or they will disappear.

Grab your large mixing bowl. Add the mayonnaise and the chopped artichoke hearts. Stir them together until the artichokes are well coated. The mayonnaise makes the dip very rich. It creates a smooth base for the cheese.

Add the Parmesan and Mozzarella cheese to the bowl. Put in the minced garlic, pepper, and salt. Use your spatula to fold everything together. Make sure the garlic is spread out evenly. You want flavor in every single bite.

Lightly grease your baking dish with a little butter or oil. Pour the mixture into the dish. Use the back of your spoon to smooth the top. It should look flat and even. This helps it bake at the same speed.

Place the dish in the center of the oven. Bake for about 20 to 25 minutes. Watch for the edges to start bubbling. The top should turn a light golden brown. It will smell amazing in your kitchen.

Take the dish out of the oven. Let it sit for about 5 minutes before serving. This allows the cheese to set slightly. If you want, sprinkle some fresh green onions on top. It adds a nice pop of color.