Apple Cranberry Pie with Crumble Topping

This pie cheats a little by combining a classic apple-cranberry filling with a streusel-style oat crumble on top instead of a second crust. The result is the textural best-of-both-worlds: gooey, tart-sweet fruit filling underneath, buttery crisp crumble on top.

Granny Smith apples are the right choice here for two reasons. Their tartness balances the sweetness of the brown sugar in both the filling and the topping, and their firmer flesh holds up to the long, slow bake without turning to mush. Softer apples like McIntosh would dissolve into baby food.

Tossing the apple slices in lemon juice does double duty. It prevents browning during prep and adds a brightness that keeps the filling from skewing one-note sweet. Don’t skip it.

The slow 300°F (150°C) bake is what makes this pie special. Most pie recipes call for higher heat, but the low oven gives the apples enough time to soften and the cranberries to burst, while the crumble slowly takes on color without burning. An hour and a half is a long time to wait, but the result justifies it.

Butter squares dotted across the topping melt into the crumble during baking, basting the oats and creating the toasty, almost-candied texture that makes streusel work.

Pro Tips

• Place the pie on a foil-lined baking sheet. The cranberries will leak juice and the foil saves your oven floor.
• If the topping browns too quickly, tent with foil for the last 30 minutes.
• Cool at least 2 hours before slicing. Hot filling runs everywhere; cooled filling slices clean.

Variations

• Swap a third of the apples for chunks of pear for a softer, more floral filling.
• Add a quarter cup of chopped pecans to the crumble for nutty crunch.
• Stir a teaspoon of orange zest into the filling to amplify the cranberry brightness.