Step 1

Add all dry ingredients into a quart-sized Mason jar.

Step 2

Add a two-piece lid and label and date the jar.

Step 3

Preheat the oven to 350°F.

Step 4

In a large bowl, combine eggs and vanilla.

Step 5

Add dry cake mix ingredients and stir to combine.

Step 6

Add softened butter and milk and stir until smooth.

Step 7

Pour batter into greased and floured pans. (Recipe makes one 9-inch square cake or 12 cupcakes.)

Step 8

Bake at 350°F for 30 to 40 minutes or until a toothpick inserted in the center comes out clean. Bake cupcakes for approximately 16 minutes.

Step 9

Allow to cool completely before frosting.