Cream the butter and cream cheese together by hand and then blend in the garlic. Blend until almost smooth. Add the onion and Italian seasoning mixing well. Blend in the milk and then blend in the walnuts. Blend until thoroughly mixed. Serve at room temperature. Makes about 1 3/4 cups of dip. SUGGESTED DIPPERS: Apples, Lavasch Crackers, Potato Chips, Broccoli, Cocktail Rye Bread, Dried Fruit