BLT is a decent spot for a burger that you'll find immediately upon entering The Mirage's strip-side entrance.
Service was o.k. in between the serve apologizing for how long it took for him to get to us and how long it took to bring us the bill. We weren't in a major hurry as we were in the middle of a day of visiting pretty much every casino on the west side of the strip.
My wife's Shafts Blue Cheese Burger was tasty-the onions were perfectly caramelized. My BLT burger was a traditional bacon burger and both were cooked as ordered.
Sides were o.k. The horseradish cole slaw tasted good but you can only eat so much cole slaw. Sweet potato fries were decent. The buns that came with the burgers were blah-I'd recommend ordering a different type if you can.