One verse

Srimad Bhagavatam 8.16.41

8.16.41

निवेदितं तद्भ‍क्ताय दद्याद्भ‍ुञ्जीत वा स्वयम् । दत्त्वाचमनमर्चित्वा ताम्बूलं च निवेदयेत् ॥ ४१ ॥

niveditam tad-bhaktaya dadyad bhunjita va svayam dattvacamanam arcitva tambulam ca nivedayet

niveditam
this offering of prasada
tat-bhaktaya
unto His devotee
dadyat
should be offered
bhunjita
one should take
va
either
svayam
personally
dattva acamanam
giving water to wash the hands and mouth
arcitva
in this way worshiping the Deity
tambulam
betel nuts with spices
ca
also
nivedayet
one should offer.

One should offer all the prasada to a Vaisnava or offer him some of the prasada and then take some oneself. After this, one should offer the Deity acamana and then betel nut and then again worship the Lord.