To a large bowl, add refried black beans and taco seasoning and mix well to combine.
In a baking dish or serving platter (I used a 9-inch pie dish), layer beans, salsa, lettuce, olives, cheese, and diced tomato. Cover with guacamole, spreading it into a smooth layer.
Add sour cream on top, using a squeeze bottle to draw a spider web shape. (I started by drawing intersecting lines in an asterisk/star shape across the dish, then curved lines in between to connect them!)
Garnish the edge of the dish with more diced tomatoes, olives, and cheese. Serve with your favorite dippers!
Yields 8 servings Halloween 7 layer dip.