I really like using the box mix extender recipe of:

1 box mix
1 cup flour
1 cup sugar
4 eggs
water and oil as called for on box
1 box instant pudding
1 cup sour cream

However, we don't like how dense it makes the cake. Can I substitute the sour cream for yogurt or light yogurt to make the cake lighter?

Thanks,
Anita

I prefer extender mixes without pudding mix, as I find they make the cake heavier. I use the WASC recipe. It is dense, but not heavy. You could also try reducing the sour cream.

1 mix 3 eggs
1 c. sugar 2 T oil
1 c. flour 1 1/3 c. water
1 c. sour cream 2 t. vanilla
pinch salt 1 t. almond

Thanks for the replies. I truly appreciate it.

My recipes that use only egg whites instead of whole eggs are lighter.