Yes. In Jainism you can offer rice after eating as a form of dana (charity): typically by sharing with or giving to monks, nuns, or those in need. The important point is the intention (bhavna) to practice ahimsa and generosity, not to waste food.

A few simple guidelines:

• Do it with a pure intention to help others and not to gain merit for yourself.
• Offer food that is prepared without causing harm to living beings (no bhiksha in a harmful ritual, and no waste).
• If you are eating with others, you can set aside a portion as dana for the needy or for the monks/nuns later.
• Some households also distribute prasād (blessed food) or offer cooked rice as part of seva, but the core idea is kindness and non-violence.

If you’d like, tell me which Jain sect you follow (Digambar or Shwetambar) and I can explain any subtle differences in practice.