Warm a 16-ounce can of refried beans in a saucepan over low heat for about 5 minutes, stirring frequently. Mix in taco seasoning and taco sauce until combined.

Spread the seasoned refried beans evenly into a glass pie plate or serving dish.

Combine avocado, lime juice, salt, and garlic powder in a mixing bowl. Mash until smooth and spread over the beans.

Mix sour cream with a splash of milk until smooth. Create a web design over the guacamole layer.

Using a toothpick, drag lines from the center of the circles to the edge to create a spider web effect.

Sprinkle sliced black olives, cheddar cheese, chopped tomatoes, and sliced green onion around the edges.

Decorate with a plastic spider ring in the center.

Assemble the dip about 30 minutes prior to serving to allow flavors to meld.