Another Queen's Gambit Trap

Shortly after taking up the opening (always played the Tarrasch defense as a kid) I fell into this trap in blitz a few times. A few weeks later I got to use it in a classical time control. Pause the game below after black's twelth move (Nd7) to find a path to an advantage for white. Despite winning material in the opening, it took me a further six hours or so to pull out the win. That's what it was like growing up in Wisconsin with the preferred time control of 40 moves in two hours and then one hour for each side every 20 moves until the game ended or one of the players died of exhaustion.