Blueberry Streusel Muffins
["2 Tbsp. butter", "1 egg", "3/4 c. sugar", "1/2 c. orange juice", "2 c. sifted flour", "2 tsp. baking powder", "1/4 tsp. salt", "2 c. blueberries"]
["Cream butter and sugar; beat until light.", "Add egg and again beat until light.", "Add sifted dry ingredients alternately with orange juice.", "Fold in blueberries.", "Pour into paper-lined muffin tins.", "Sprinkle with Crumb Topping.", "Bake in 375\u00b0 oven for 30 minutes.", "Dust with confectioners sugar."]
["butter", "egg", "sugar", "orange juice", "flour", "baking powder", "salt", "blueberries"]