Place one tortilla on the bottom of a 7 to 9 inch round casserole dish. This will help keep all the ingredients together when serving. Use about 3/8 of the refried beans on this bottom layer.
Place another tortilla on top of that.(it's okay if it doesn't reach the edge). Mix the rest of your refried beans with an equal or larger amount of salsa, depending on the size of your pan and how thick you want it. Spread just enough to cover the tortilla. Continue process to the fourth tortilla(which also has the beans/salsa on it).
Now slice the romaine hearts into thin slices by pulling the knife back over them horizontally. Garnish the top layer with the lettuce first in a circle around the edge. (You may want to wait for this until after you bake, as the lettuce may burn)
Dice tomatoes, and finally in the very center, add a large amount of black olives. Bake in the oven at 450 degrees for about 20 minutes.
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