Mamta
You need a blueberries, flour, sugar, oil, milk, eggs and baking powder, vanila extract.
Preheat oven to 400 degrees. Prepare a muffin pan with cupcake liners. In a large bowl, sift together cups flour, sugar, baking powder, salt. Set aside.
In a bowl, whisk eggs until smooth. Add the melted butter, milk, and vanilla, and whisk until combined. Add egg mixture to flour mixture and combined.
Ina medium bowl, combine flour, 2 tbsp brown sugar, 2 tbsp granulated sugar, cinnamon, and ⅛ tbsp salt.
Using a pastry cutter, cut in butter until topping is crumbly and coarse.
Fill prepared muffin cups with batter. Top each muffin with streusel topping, about 1 tablespoon each..
Bake muffins about 18 to 20 minutes. Cool muffins on a rack for several minutes. Then serve and enjoy.