Melt butter in a small saucepan.

Stir in crushed vanilla wafers, reserving 1/4 cup for garnish.

Pat the remaining crumb mixture on the bottom of a buttered 13 x 9-inch baking pan.

Set the crust aside.

In a separate bowl, combine peach pie filling, sweetened condensed milk, yogurt, and almond extract.

Mix until well combined.

Pour the peach mixture over the prepared crust.

Sprinkle the reserved vanilla wafer crumbs over the top.

Cover the pan and freeze for at least 4 hours or until firm.

Cut into squares and serve frozen.