Help with my first kegged beer

I brewed NB’s nut brown ale extract kit, and after carbonating in the keg I am finding it to be too light almost tasting a little watery. Color seems just right, OG was close. Can I add anything at this point to increase the flavor or improve it at all?

How long has it been in the keg? My kegged beers usually taste a little light until about 3-4 weeks then they seem to be at their best. They change a little bit from bitter hoppy to more malty sweet. Try to stay away from it until you are at 3 weeks then try it. (I know it’s hard)

It’s been kegged for two weeks now. We’ll see what happens over the next few weeks. If it stays the same, any suggestions for it or is it too late for this batch? The wife loves coffee stouts and wants to try adding cold brew coffe to part of this batch, anyone done coffee in something other than stout?