A thick, quality cake frosting will stay on a cake without melting and, in the case of piped decorations like flowers and borders, hold its shape over time. It can easily be altered, however, with liquids right in your kitchen to make a thinner glaze suitable for dipping anything from cookies to french toast sticks. Start your homemade dipping glaze with store-bought, canned frosting or homemade buttercream frosting. Thin the frosting a little at a time to find the best consistency.
Place the frosting in a microwave-safe bowl and microwave it for about 10 to 20 seconds to melt the sugar and fat in the frosting. Stir the frosting well and microwave it in additional 10-second intervals, if needed, until it reaches a drizzling consistency.
Stir in milk 1 tablespoon at a time to thin out the frosting. Use a wire whisk to thoroughly incorporate the milk with the frosting. Alternatively, use a liquid such as orange juice to thin the frosting while adding a hint of flavor.
Scoop up a bit of the frosting in a spoon and tilt the spoon so the dipping glaze drizzles off the spoon. If it doesn't drizzle well or isn't thin enough, stir in more liquid until you reach the desired consistency.