found this hope its the one!
Chocolate Cheesecake Muffins
Source: 1st Traveler's Choice Internet Cookbook
1-1/2 cups flour
1 cup sugar
1/4 cup cocoa
1 tsp. baking soda
1 cup water
1/3 cup oil
1 tbl. vinegar
1-1/2 tsp. vanilla
1 (8oz.) pkg. cream cheese, softened
1 egg
1/3 cup sugar
1 (6oz.) pkg. chocolate chips
Combine the flour, sugar, cocoa and baking soda. Then add the water,
oil, vinegar and vanilla. Mix well. Place paper lines in the muffin tins or
grease and flour each tin. Fill each muffin tin halfway. Cream the cream
cheese, egg and sugar together. Top the batter with this cream cheese
mixture. Top each tin with some chocolate chips.
Bake in a 350 degrees oven for 20-30 minutes.
http://www.recipekitchen.com/Breads/muffin1.ht ml