Chocolate swiss rolls

I found out this recipe in a magazine and just changed it a little bit . This was my first attempt at making these rolls. My son just loved it....

INGREDIENTS:
3/4 cup all-purpose flour
1/3 cup cocoa powder
1 tsp baking powder
4 eggs 3/4 cup granulated sugar
2 tsp vanilla extract
2 cups whipped cream

DIRECTIONS:

1. Stir together flour, cocoa powder, baking powder. In a large bowl, beat the eggs until very light yellow. Add granulated sugar beating until smooth. Then add vanilla extract.

2. Fold flour mixture into egg mixture till smooth without lumps. Pour into 15x10x1 inch jelly roll pan lined with sprayed wax paper. Bake at 350 degrees F for 10-12 minutes.

3. Take a clean kitchen towel. Invert the cake on it almost immediately. Roll up the towel and cake from short end and let it cool.

4. Unroll after cooling, trim any hard edges of the cake. Spread the whipped cream to within 1 inch of the borders. Reroll the cake without towel. Wrap in plastic wrap and store in refrigerator for 2-3 hours. Cut out into rolls before serving it..