A simple recipe for glazed donut icing is Betty Crocker's vanilla glaze that calls for three ingredients and only one step. To make the glaze, combine 1/2 cup powdered sugar, 1 tablespoon milk and 1/2 teaspoon vanilla with a whisk. Mix the glaze until it is smooth, dip donuts into the glaze, and top with sprinkles, if desired.
King Arthur's Flour also provides easy recipes for vanilla, chocolate and apple cider donut glazes. To make the vanilla glaze, mix together 1 1/4 cups powdered sugar, 1 tablespoon light corn syrup, 1 tablespoon melted butter, 1 or 2 tablespoons water and 1/2 teaspoon vanilla. Add in extra powdered sugar or water to get the glaze to the desired consistency.
To make the chocolate glaze, melt together 1/2 cup semisweet chocolate chips, 2 tablespoons butter, 1 tablespoon plus 1 teaspoon light corn syrup, and 1/4 teaspoon vanilla in the microwave. Make sure to stir the mixture frequently, and add extra corn syrup if the glaze is not smooth enough.
To make the apple cider glaze, combine 2 tablespoons boiled bottled apple cider, 1 tablespoon heavy cream and 1 cup confectioner's sugar. Add in extra cream or sugar to reach a consistency similar to molasses. Dip donuts in the glaze, or drizzle it over donuts.