Can you tell me about the time Sai Baba knew Laxmichand was craving khaja and how he fulfilled that wish?

Certainly. This incident highlights Sai Baba's omniscience. As told in the Shri Sai Satcharitra, Laxmichand was visiting Shirdi with other devotees. On the second day of his visit, he remembered the sweet khaja that had been served the day before and felt a desire to have it again, but it was not available. On the third day, when the devotees went to the masjid for worship, Baba specifically instructed them to bring him a plate full of khaja as a food offering (naivedya). Later, after the arati, Baba announced that he felt like having khaja prasad and that everyone should be served. Devotees then brought two bowls of khaja, and Laxmichand's unspoken wish was fulfilled, filling his heart with joy. This entire episode is a testament to how Baba knew and fulfilled the subtle desires of his devotees, as detailed in Chapter 28.