Whip eggs together with sugar, beat until soft peaks.
Fold flour in small portions, about 1/3 of a cup at the time.
Fold in cake sprinkles, depending on the season and occasion you may want to change the colors.
Spread the cake dough onto a lined baking sheet, mine is 11X18 in size. Bake at 350F for about 13-15 minutes. Remove from the oven, place the towel on top and roll it into a roll. Keep it rolled until it cools to a room temperature.
Birthday Cake Cream
Prepare ingredients for the cream.
Make sure that whipping cream is very cold and cream cheese is at a room temperature. Whip whipping cream until soft peaks.
In a separate bowl, whip together condensed milk with cream cheese and vanilla extract. In small portions, fold cream cheese mixture into whipping cream.
Remove the towel from the cake roll. Apply a very generous amount of the cream on the inside. Carefully fold the cake back together, making sure that the cream doesn't get pushed out on the sides.
Place the cake onto the serving tray; you can cover the sides with foil, to keep the plate clean. Apply the remaining cream on the outside.
Sprinkle with more cake sprinkles and refrigerate at least for 3 hours, preferably overnight.