We went blue berry picking with my mom-in-law. And I made some muffins using this recipe from smitten kitchen. 5 tablespoons (2 1/2 ounces or 71 grams) unsalted butter , softened 1/2 cup (3 1/2 ounces or 100 grams) sugar 1 large egg 3/4 cup sour cream or plain yogurt 1/2 teaspoon grated lemon zest 1 1/2 cups (6 3/4 ounces or 191 grams) all-purpose flour 1 1/2 teaspoon (7 grams or 1/4 ounce) baking powder 1/4 teaspoon (1 gram) baking soda 1/4 teaspoon (2 grams) salt Creamed butter and sugar, add egg, beat, add sour cream, vanilla, Add dry ingredients, add to muffin pans and bake.