On a lg. round or oval dish spread out refried beans.
Fry hamburger until no longer pink, and drain grease.
Add Ro-tel tomatoes and taco seasoning mix and let liquid boil out. Mixing a few times so the burger doesn't stick.
When most of the juice is evaporated put the meat mixture over the refried bean layer.
Spoon on salsa and spread across meat mixture.
Sprinkle with cheese.
Bake in 350 oven for 15-20 minutes, or until cheese is melted.
In the meantime, spoon the sour cream into a small Zip-Lock bag, and cut the corner. Pipe a large dot in the middle of the cheese, then make a line about 1" from the circle all the way around.
Make another circle 1" from previous circle all the way around, and continue making lines until you are at the edge of the mixture.
Drag a tooth pick through the sour cream to make a web design OR you can draw horizontal lines with the sour cream a few inches apart, all the way around to make a spider web, so you can add more sour cream to the top. I usually do it this way.
I decorated the top with a little spider for added affect.