First let me say there a number of Key's and I have not been to all of them. I have been to at least four of them and they all have some things in common. Though this review will be most accurate to my "local" one, the Spring Lake Park location.
Key's is comfort food to the max. Portions are big and tasty with not much concern for making the food "Healthy". Most of the meals ring in for under $15 and if you leave hungry you are a very special person. I'm very fond of the Biscuits and Garvy (for breakfast), Meatloaf, and Apple Pie. I have tried lots of other dishes though and they've all been quite good.
The biscuits and gravy have fresh biscuits, like all their baked goods, and a salty fatty sausage white gravy. Maybe it's just cause it's a bit tough to find here or maybe it's good sausage available but flavor is on the level of good quality from down south. I'm adding weight just thinking about it.
I should probably reiterate, Key's isn't the place to go if you are looking for elegance and refinement. The meatloaf is smothered in brown gravy, moist, tender, and with a hint of sweetness. The only thing that could be considered a drawback is the side vegatables are cooked old school style, till they turn mushy. I actually like this, it fits with the style of the place, but if you like your green beans crisp that won't happen here.
Apple pie, made fresh. Need any more? They also have great cinnamon and carmel rolls and other great pies and cakes. Dessert is not a problem.
I went twice this past weekend and I'm ready to go back.