dealing with a passive white

This is probably a simple question, but how do you deal with a passive white. For Example:

First I think you should be a little thankful that your opponent isn't pressing for an advantage.

And I do think 2..Nf6 is a good move.  Perhaps followed up with 3..d5 should be good for a least equality.  Generally in 1.e4 e5 openings if black can play get in d5 they are in good shape

2.Nc3 is not so passive. It waits for 2...Nf6 3. f4, and the black queen can not annoy white's king side as it can do in the normal king's gambit.

this is against 2. d3 right?  please tell me you did not recommend playing the scotch as black

Its not really a reversed scotch.  In a regular scotch game black doesn't play d6 early and is able to actively develop his kings bishop.  In this variation white can only play his bishop out to e2.

dont think to much about the colours:) if your opponent is to passive consider yourself "white" and go for the initiative

of course it's not really a reversed scotch if white plays d3.  It's a scotch if white plays 2. Nc3, which was the other move suggested by the OP, and black follows with Nf6 and d5.  That's what I was saying.  A reversed phillidor would be just fine for black, just because the phillidor is so "let the other guy have all the space and hope for a draw"

Well, first you have to thank white for being passive.

Then you grab the initiative and continue with development.

Each of the moves below gives black a comfortable game - chessgames.com opening explorer:

2...Nf6	46	39.1% 30.4% 30.4%
2...Nc6	16	31.2% 18.8% 50%
2...Bc5	10	40% 60%