Whoopie Pies

Yield:	14 Servings
Categories:	Fillings, Chocolate, Cookies, Custards, Puddings

2/3	c	Vegetable shortening
1 1/4	c	Sugar
2	lg	Eggs
2 1/2	c	All purpose flour
1/2	c	Unsweetened Dutch process cocoa powder
1 1/2	ts	Baking soda
1/2	ts	Salt
1/4	ts	Cream of tartar
1	c	Milk
1 1/2	ts	Vanilla
		for filling
1/2		Stick unsalted butter; (1/4 cup) softened
2	c	Sifted confectioners' sugar
1/4	ts	Salt
1/2	ts	Vanilla
4	tb	Heavy cream