Preparation
On 12 to 14 inch serving plate or platter, spread beans, about 3/8 inch thick. Carefully spread avocado dip on bean dip to within 3/4 inch of edges. Spoon sour cream on avocado dip to within 3/4 inch of previous edge.
Top with remaining ingredients, arranging in concentric circles. Cover, chill.
Serve with crackers or corn chips.