Of course, one "solution" is not to put the Knight there in the first place. Consider the Abrahams Jerome Gambit, 1.e4 e5 2.Bc4 Bc5 3.Bxf7+!?
I consulted The Database, and learned that it has one 1.e4 e5 2.Bc4 Bc5 3.Bxf7+ game by Bill Wall - always a good openings experimenter to check out - played on the internet in 2001. (Even that far back, he played a couple of games with 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+.)
It turns out that at the same time Bill was extending his experiments a bit, as the following game shows.
Wall, Bill - Quianna
Internet, 2001
1.e4 e5 2.Bc4 Bc5 3.b4
This move is at least as old as the MacDonnell - La Bourdonnais, London match,1834.
3...Bxb4 4.c3 Bc5 5.d4 exd4 6.Bxf7+
Here we have what might be called the "Evans-ish Abrahams Jerome Gambit", as it is not quite an Evans Gambit without Nf3/Nc6. The game follows MacDonnell - Boden, London, 1869, for 5 moves, but the first game example that I have of the move 6 Bishop sacrifice is from 2000. (Light analysis of the sacrifice is at least as old as Jaenisch's Analyse Nouvelle des ouvertures in the 1840s.)
6...Kxf7 7.Qh5+ g6 8.Qxc5
NM Eric Schiller, in notes to a game (Denker - Shayne, Rochester, New York, 1945) at Chessgames.com, said this position "looks very good for White". (It's probably about even - but for White to reach equality in 8 moves in any kind of Jerome Gambit has got to be very good, right?)
8...dxc3
The kind of pawn-grabbing that is usually punished.
Instead, Stockfish 9 suggests 8...Qe7 - as seen in Delanoy - Kamenecki, Cannes, France, 2000 (1-0, 38) - with an even game. However, Michael Goeller, a Bishop's Opening expert, gives that move a "?!" and prefers 8...Nf6 - no games in The Database - which he gives a "!", with an even game. There doesn't seem to be anything wrong with 8...Nc6 or 8...d6, either.
9.Nxc3 d6
10.Qd5+
Psychological warfare. Bill has used a similar Queen check in the Jerome Gambit proper to question Black: Do you want to play ...Be6 and give up the b-pawn?
10...Kf8
Black replies Not quite, and keeps his King off of the a1-h8 diagonal, where one of his Rooks lives, and where White's remaining Bishop might take up residence. Yet, 10...Kg7 might have been a better move.
11.Nf3 c6
Kicking the Queen, instead of focusing on development.
White has ample compensation for his sacrificed pawn (development, Black's unsafe King), and his opponent's next move, a nervous oversight, ends the game.
12.Qd4 c5 13.Qxh8 Black resigned
If 5...g6 6.Qxe5 winning back the piece with a winning position. 
