Preheat oven to 350F
In a large bowl, blend the sour cream and cream cheese until smooth.
Fold in spinach, shredded cheeses, and all spices. Mix until thoroughly combined.
Transfer dip into a baking dish and spread out into an even layer.
Bake for 10 minutes or until cheese is melted and browning on the top.
Serve immediately with sliced French bread, crackers or chips for dipping.