Paper Bag Apple Pie

This is the apple pie trick that grandmothers used long before convection ovens were a thing. The whole pie, with its streusel topping in place, gets slid into a paper grocery bag and clipped shut before going into the oven. The bag traps moisture, the apples steam-bake until tender, and the streusel browns evenly without scorching the edges. The bag itself doesn’t catch fire (the moisture inside keeps it well below the autoignition temperature), but it does dampen direct radiant heat in a way that produces a softer crumb and juicier filling than open-air baking.

The technique solves the classic apple pie problem of underdone apples and burnt crust. At 425°F (220°C) for a full hour, the apples cook through completely while the lemon-juice-tossed slices keep their color and the streusel finishes golden brown. Cut the bag open after baking, slide the pie out, and cool on a rack. The first slice reveals everything the bag was hiding: layers of buttery streusel, soft cinnamon-spiced apples, and an unburnt bottom crust.

Pro Tips

• Use a plain brown paper grocery bag, never one that’s been printed or treated. Inks can smolder and contaminate the food.
• Clip the bag with metal paper clips. Plastic clips melt; staples can rust onto the bag and shed flecks.
• Place the bag on a baking sheet to catch drips. Apple juice can soak through and make a mess of the oven floor.
• Don’t open the bag during baking. The trapped steam is doing the work; venting kills the technique.

Variations

• Use a mix of Granny Smith and Honeycrisp apples for tartness and texture variety.
• Add half a cup of chopped pecans or walnuts to the streusel for crunch.
• Drizzle warm caramel sauce over each slice for a salted caramel apple finish.