The warm apple pie topping over cold vanilla soft serve creates the most satisfying temperature contrast. Cinnamon-spiced apples with buttery crust crumbles deliver authentic pie flavor. Way better than expected for fast food.
Preheat oven to 400°F. Lay the pie dough sheet flat and brush lightly with melted butter, then sprinkle with 1 tsp sugar and 0.5 tsp cinnamon for a crust flavor that mimics Arby’s authentic pie crumble.
Cut pie dough into small 1-inch pieces, bake for 10–12 minutes until golden and crisp, then set aside for assembling your sundae.
In a saucepan over medium heat, combine apples, 1 cup sugar, 1.5 tsp cinnamon, lemon juice, cornstarch, salt, and water. Stirring constantly, cook for 10–15 minutes until apples are tender and sauce is syrupy. Arby’s effect: the cinnamon-sugar mixture and cornstarch thicken the filling to that signature sweet and gooey consistency.
Spoon warm apple pie topping over bowls of vanilla ice cream. Arby’s-tasting tip: serve the apples hot for the true cold-and-warm contrast.
Top with pie crust crumbles and serve immediately—the contrast between warm, spiced apples, cold ice cream, and crunchy crust is exactly what makes Arby’s Apple Pie Sundae special.