Sprinkle 2 cups of the Granola in ungreased 9 x 9 x 2-inch baking pan; drizzle with ice cream topping.
Cut ice cream into about 1-inch slices; place on Granola in pan.
Let stand until slightly softened; spread evenly.
Sprinkle with remaining Granola.
Cover and freeze until firm, about 6 hours.