Cake Mixes are smaller now!

We made cake mix cookies last week - but what to do when the recipe asks for an 18oz cake mix and most of them are now around 25oz? I found this info:

The recipe provided can be used for yellow or white cake mixes. For chocolate mixes, substitute 25 percent of the flour with cocoa powder. Store the cake mix add-in in a mason jar to have on hand as needed. The liquid ingredients for the mixes remain the same.

Three-Ounce Cake Mix ‘Upsizer’

Adapted from the Better Homes & Gardens New Cook Book. For white and yellow cake recipes.

1 1/2 cups all-purpose flour

1 cup sugar

2 teaspoons baking powder

1/4 teaspoon baking soda

Whisk all dry ingredients together and store in a clean mason jar. When you wish to increase a 15.25 ounce cake mix to 18.25 ounces, add three ounces of this mix (6 tablespoons) to your existing cake mix.

Makes about 6 portions.

Nutrition information per serving: 242 calories, 0% calories from fat, 0g fat, 0g saturated fat, 0mg cholesterol,58g carbohydrates, 34g total sugar, 34g added sugar, 3g protein, 53mg sodium, 1g fiber

OR

According to someone called the cake lady - Just add 6 Tbsp of flour! That's easier!