1.
Bake the mini-cupcakes, according to the package instructions. I used 88 mini-cupcakes for this cake, but this recipe is very flexible. You can make your Mini-Cupcake Flag larger or smaller, depending on your needs. 1 box cake mix will make plenty of mini-cupcakes for this project
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2.
While the cupcakes are cooling, cover your bar pan, or sheet of cardboard with cake foil. Wrap it across the top, and tape the edges of the foil to the bottom of the pan (or cardboard) to hold it in place.
3.
Once your mini-cupcakes have baked and cooled, lay them out in rows to create a rectangle. I made 8 rows that were 11 cupcakes wide.
4.
Before frosting anything, plan out how you are going to create your stars and stripes. The stars will go in the upper-right corner. I used 5 cupcakes across (wide) and 5 cupcakes down (long) to make my stars section.
5.
Put a tiny dollop of icing on the bottom of each cupcake to hold it in place on the cake board.
6.
Divide the remaining icing into thirds. You'll need between 1 to 1½ cups for each color.
7.
Color your frosting:
a. color 1 portion royal blue with your blue food coloring
b. color 1 portion red with your red icing
c. leave the last portion white
8.
Decorate the blue cupcakes with the Wilton #12 decorating tip and a pastry bag. Add the blue icing to the bag after you put the tip into the end. Then gently squeeze the icing onto the cupcakes in a circular motion. If you want to size your cake like mine (in the photos) ice the first 5 cupcakes on the left in the top 4 rows with the blue icing.
9.
Top the blue cupcakes with white star sprinkles. Put 4 or 5 sprinkles on each mini-cupcake.
10.
Ice every other row of the remaining cupcakes with the white icing, using a pastry bag and the Wilton # 21 decorator tip.
11.
Use the same circular motion to ice the cupcakes.
12.
Ice the remaining rows (using the same circular motion to ice each cupcake) with the red icing, a pastry bag, and the Wilton #21 decorator tip.