1 1/2 c. all-purpose flour
1 c. sugar
1/4 c. unsweetened cocoa powder
1 tsp. baking soda
1/2 tsp. salt
1 c. water
5 tbsp. vegetable oil
1 tbsp. cider vinegar
1 tsp. vanilla

Mix flour, sugar, cocoa powder, baking soda and salt in large bowl. Make well in center to add water, vegetable oil, cider vinegar and vanilla, blended together. Gradually blend in flour into liquid, whisking until smooth. Spoon into greased muffin tins, either regular size or mini size. Beat with an electric mixer: 1/3 c. sugar 1 egg

Stir in 6 ounce semi-sweet chocolate chips. Spoon over batter. Bake at 350 degrees approximately 20 to 25 minutes until test comes out clean in center. Cool in tins on racks 10 minutes. Remove to cool. Store in airtight container. Yields 18 regular size or 48 mini size.