Casserole Ubi Jalar

Bahan-bahan (8 porsi)

• 3 large ubi jalar (kupas dan potong dadu, (sekitar 2 pon,) $3,39)
• ½ cup salted butter (divided, (113g) $0.92)
• ¼ cup whole milk (2 fl oz., $0.06)
• 2 eggs (beaten, $0.39)
• ½ cup brown sugar (divided, (100g) $0.25)
• ½ tsp ground cinnamon ($0.02)
• ½ tsp salt ($0.04)
• 1 tsp vanilla extract ($0.67)
• ½ cup chopped pecans (55g, $1.69)
• ¼ cup all-purpose flour (30g, $0.04)