1 1/2 cups crushed zwieback toast
1/3 cup white sugar
2 teaspoons ground nutmeg
6 tablespoons butter, melted
2 (8 ounce) packages cream cheese, softened
3/4 cup white sugar
3 tablespoons all-purpose flour
3 tablespoons milk
1 teaspoon vanilla extract
1/8 teaspoon salt
3 eggs
2 (8 ounce) containers vanilla yogurt
2 cups shredded Colby cheese