Can you tell me about Laxmichand's experience with Sai Baba and the khaja sweet?

Certainly. The story of Laxmichand and the khaja is a wonderful example of Sai Baba's omniscience. As narrated in Chapter 28 of the Shri Sai Satcharitra, Laxmichand was visiting Shirdi and, after having a small piece of khaja one day, developed a strong desire for more. This eagerness remained in his mind. On the third day, in a display of his inner knowledge, Sai Baba specifically ordered a plate full of khaja for the naivedya, or food offering. Later, during the meal, khaja was served, fulfilling Laxmichand's unspoken attachment and filling his heart with joy. This event solidified his devotion to Baba.