Chuck Jurgens wrote:

I have a house on Lake Gaston in Warren County which has the worst
soil I have ever seen! A lot of leaves have fallen and I'd like to
incorporate them into the soil. I have the option of burning them and
then tilling the ashes into the soil OR mulching them and tilling into
the soil OR just tilling them into the soil.

Any recommendations on which option would be best for growing grass?

Mulch and till. Buring them will remove much of the value. Tilling
alone often does not chop them into fine pieces.