Mexican chefs generally boil their hamburger. In this case you can pass up the boiling and just brown the hamburger in a large skillet if you like. Preheat the oven to 350 degrees, as well.
When the hamburger is beginning to brown add the onions, olives, taco seasoning and tomato sauce. Cover and let simmer for 10-15 minutes.
Get out a medium-sized bowl and put the cottage cheese and sour cream in it. Stir to mix and blend.
Crush the tortilla chips and spread them on the bottom of your casserole dish. Cover the crushed chips with a layer of the meat and veggies. Then, spread on some of the cottage cheese-sour cream blend.
Now spread on a layer of the grated cheese. Repeat the layers, ending with the shredded cheese on top.
Bake until the casserole contents begin to bubble all over. Serve and enjoy. Readers with questions or comments for Dave Kessler may write to him in care of this publication.