banana-sour cream ice cream 

1/2 cup sugar minus 3 TB
¾ cup sour cream, room temp.
1 ½ cup half & half
14oz. sweetened condensed milk
4 packs of banana pudding packs (about 13-16 ounces)
½ cup of chopped & toasted walnuts or pecans, optional

In a large bowl, mix everything together (not the nuts). 
Make sure the sour cream is nice and dissolved, if not use a hand mixer to thoroughly mix.
Pour mixture into ice cream maker and follow manufactures churning directions. 

Right before you remove the ice cream, add in the chopped nuts, if using.
Then continue mixing for about 30 seconds. 

Makes about quart and a half.