Preheat oven to 350℉. Spray a 9 x 13 baking dish with non stick spray and set aside.

In a large skillet over medium heat, brown ground beef, breaking it up as it cooks. Drain excess grease.

Stir in the refried beans, chilies, taco seasoning, and 2 Tablespoons of the salsa. Set aside the remaining salsa for later.

Cover the bottom of the casserole dish with lasagna noodles, breaking as needed. Top with ⅓ of the beef mixture and 1 cup of shredded cheese. Repeat the layers two more times (noodles, beef, cheese, noodles, beef, cheese).

In a medium bowl or measuring cup, stir to combine the water with the remaining salsa. Pour evenly over the lasagna.

Cover with aluminum foil and bake for 1 hour.

Remove from the oven, top with sour cream, olives, and remaining 1 cup shredded cheese. Return to oven uncovered 5-10 minutes, or until the cheese on top is melted. Let stand 10 minutes before serving. Top with tomatoes and green onion before serving, if desired.