A 908 name in Mahāgaṇapati Sahasranama with commentary by Bhaskararaya describes to us Gaṇapati's favourite fire oblations.

908. aṣṭadravyahaviḥpriyāya namaḥ ।

तिलेक्षुसक्तुचिपिटः कदल्यो मोदकास्तिलाः
नारिकेलघृताक्तानीत्यष्टद्रव्यहविप्रियः
tilekṣusaktucipiṭaḥ kadalyo modakāstilāḥ
nārikelaghṛtāktānītyaṣṭadravyahavipriyaḥ

One who is fond of the eight different things offered as oblations through the sacred sacrifice.

As per the commentator:

1. ikṣu - sugarcane
2. saktu – flour made of roasted grains
3. cipiṭaḥ - flattened rice
4. kadali - banana
5. modakā – modaka sweet made with rice flour and jiggery
6. tilāḥ - sesame seeds
7. nārikela - coconut
8. ghṛtāktānī – rice soaked in ghee.

1. Modhaka (type of sweet)
2. Pruthuka (beaten Rice)
3. Lāja (parched rice grain)
4. Sakthu (Flour)
5. Ikshudanda (Sugarcane,)
6. Nalikera (Coconut,)
7. Thila (Jingely)
8. Kadali phala, (Banana).

in some other texts:

1. Coconuts,
2. Molasses
3. Sesame Oil
4. Sugarcane
5. Lemon
6. Rice flakes
7. Banana
8. Rice.

1. Dried coconut,
2. puffed rice,
3. jaggery,
4. banana (kadali plantain),
5. honey,
6. sesame,
7. sugarcane and
8. fried paddy of rice.

Source: Koushik K. Ganesha Sahasranama - Thousand Names of Ganesha: Translated Based on Bhaskara Raya Makhin's Khadyota Bhashya