Blueberry Lemon Cake

< p >1/2 kofin man zaitun mai haske ko man kayan lambu 1 tsp tsantsar vanilla 1/4 tsp gishiri 2 kofuna (260 grams) gari mai manufa duka 2 tsp baking powder 1 matsakaici lemun tsami (zest da ruwan 'ya'yan itace), raba 1/2 Tbsp corn starch li>16 oz (450g) sabo* blueberriesSukari mai foda don ƙura saman, na zaɓi