1-Divide the white cake mix batter equally: Divide the white cake mix batter equally into 2 bowls. Color half blue and half red to your liking.
2-Bake 5 cupcakes of each color according: Bake 5 cupcakes of each color according to the package.
3-Crumble up the blue cupcakes into a: Crumble up the blue cupcakes into a bowl. Crumble up the red cupcakes in a separate bowl.
4-Put some of the white frosting into: Put some of the white frosting into a small piping bag or a small plastic baggie with the corner cut off.
5-Take a mason jar and put an: Take a mason jar and put an inch layer of blue cake crumbles in the bottom.
6-Take the frosting and pipe a thick: Take the frosting and pipe a thick line around the edges of the blue cake crumbles. Make sure you are pressing the frosting against the glass edge as you are going around.
7-Add a layer of the red cake: Add a layer of the red cake crumbles next, about an inch thick.
8-Pipe another thick line of frosting around: Pipe another thick line of frosting around the edges of the red cake, again making sure you are touching the glass.
9-Add another layer of blue crumbles, then: Add another layer of blue crumbles, then a frosting line, and another layer of red crumbles.
10-Now pipe a full layer of frosting: Now pipe a full layer of frosting over the top of the cake so it’s completely covered. You should be right about at the top rim of the jar.
11-Sprinkle the patriotic sprinkles over the top: Sprinkle the patriotic sprinkles over the top.
12-Repeat steps for the remaining jars: Repeat steps for the remaining jars.