Peanut Butter Cupcakes (Gift Mix in a Jar)

JAR Ingredients
1 3/4 cups flour
1/4 teaspoon baking soda
1/2 teaspoon salt
3/4 teaspoon baking powder
1 1/3 cups sugar
1 cup peanut butter chips
ADDITIONAL INGREDIENTS (to be added by the recipient)
3/4 cup solid butter flavor shortening (Crisco)
2/3 cup creamy peanut butter
3 eggs
1/2 cup milk
1/2 teaspoon vanilla extract

Creating the Gift in a Jar:
Wash and thoroughly dry a 1-quart wide-mouth canning jar.
Layer the ingredients in the jar as listed above starting with the flour, baking soda, salt, baking powder, sugar and then peanut butter chips - make sure to press firmly with a flat bottomed object after each addition; make the layers as level as possible.
Secure the lid and decorate as desired; attach the instructions for making these cookies found below.
PEANUT BUTTER CUPCAKES GIFT TAG:
Additional ingredients to be added by the recipient: 3/4 cup solid butter-flavored shortening, 2/3 cup creamy peanut butter, 3 eggs, 1/2 cup milk and 1/2 tsp vanilla extract.
PEANUT BUTTER CUPCAKES INSTRUCTIONS:
Preheat oven to 375.
In a large bowl, combine the shortening, peanut butter, eggs, milk and extract; blend with electric mixer set on low speed.
Add the contents of the jar and continue to blend for 2 minutes.
Spoon the batter into papered muffin tins, filling each liner half full.
Bake for 15-18 minutes, or until a toothpick inserted in the center comes out clean.
Cool for 5 minutes in the tin, then transfer to a wire rack and cool completely.