I made Fenway the following recipe (I believe it's #2 on your list):

Frozen Peanut Butter Yogurt Treats
32 ounces vanilla yogurt
1 cup peanut butter
Put the peanut butter in a microwave safe dish and microwave until melted. Mix the yogurt and the melted peanut butter in a bowl. Pour mixture into Kong and freeze.

HE LOVED THEM!!!!!! But I thought it would take him 30 minutes to eat one. He ate one in 30 seconds. I didn't put it in his little Kong, but I'll have to try that the next time.

Thanks!