Preheat oven to 400 degrees. Gather all your ingredients so that you have everything close at hand on the counter or table.
Prepare the Ingredients
Slice Gruyere cheese in small slices or cubes.
Using a box shredder, shred the Monterey Jack cheese. Grate the Parmesan cheese.
Prepare the Dip for Baking
In a medium bowl, combine the sour cream, whole grain mustard, and dried basil. Mix in the prepared cheeses.
Spoon cheese mixture into a greased small baking dish or 8" cast iron skillet, which doubles as a nice serving dish.
Top the cheese mixture with sun dried tomatoes and, if desired, drained marinated artichoke hearts.
Bake in preheated oven for 10-15 minutes until bubbly. Serve warm with crusty sourdough bread, crackers, and freshly sliced apples or pears. This recipe will serve 6-8.