In this time frame I'm personally a bit risk averse, but these were my reactions to that question, depending on how this sum is viewed:
Scenario 1 -- "I want to invest this money and I think there's a high probability it will be used for a house purchase around year 10, and not much of a chance I'll need it before then." <--- I'd put it in a 50/50 mix of stock/bond funds.
Scenario 2 -- "I think of this as my emergency/contingency fund and there's a fairly equal probability I will tap it for some purpose between 1 and 10 years from now." <--- I'd just keep some in an FDIC-insured savings account and some in a bond fund.
For money I don't expect to tap until >10 years out, I'd go much heavier into stock funds.