Roti Kacang Pisang Starbucks

Bahan
2-3 gedhang gedhe sing wis mateng, ditumbuk bakal padha karo 1 tuwung (kira-kira 8 ons)
1-3/4 cangkir (210 gram) glepung serbaguna
1/2 sendhok teh. baking soda
2 sdt. baking powder
1/4 sendhok teh. uyah utawa jiwit
1/3 cup (2,6 oz.) softened butter
2/3 cup (133 gram) granulated gula
2 endhog, suhu kamar
2 tbsp. susu, suhu kamar
1/2 tuwung (64 gram) disigar walnuts kanggo adonan + 1/4-1/2 tuwung walnuts kanggo topping
1 tbsp. oat cepet kanggo topping (opsional)