Starbucks Banana Nut Roti

Bahan
2-3 cau asak badag, ditumbuk bakal sarua jeung kira-kira 1 cup (kira-kira 8 oz.)
1-3/4 cangkir (210 gram) tipung serbaguna
1/2 sdm. baking soda
2 sdm. baking powder
1/4 TSP. uyah atawa ciwit
1/3 cup (2.6 oz.) softened mentega
2/3 cup (133 gram) gula granulated
2 endog, suhu kamar
2 sdm. susu, suhu kamar
1/2 cangkir (64 gram) dicincang walnuts pikeun adonan + 1/4-1/2 cangkir walnuts pikeun topping
1 sdm. oat gancang pikeun topping (opsional)