My mother in law taught me this genius 3 ingredient dessert hack. Layer everything inside individual foil pouches and let them cook into bubbling buttery perfection.

This slow cooker 3-ingredient peach cobbler packets recipe is one of those “file it under genius” desserts my mother-in-law shared with me right after my husband and I got married. Instead of dirtying a bunch of dishes, you layer everything into individual foil pouches, tuck them into your slow cooker, and let the peaches and cake mix melt together into bubbling, buttery perfection. It’s perfect for busy weeknights, summer cookouts, or anytime you want a warm, cozy dessert without hovering over the oven. Plus, everyone gets their own little cobbler packet to open at the table, which feels surprisingly special for something this easy.

Serve each hot cobbler packet straight from the slow cooker, carefully opening the foil and either eating right out of the pouch or spooning into a small bowl. These are amazing topped with a scoop of vanilla ice cream, a dollop of whipped cream, or a drizzle of heavy cream. For a lighter option, pair with vanilla yogurt or a side of fresh berries. I like to set out a small topping bar—chopped nuts, cinnamon, or caramel sauce—so everyone can dress up their own packet while the cobbler is still warm and bubbly.

Servings: 6

2 cans (15–16 oz each) sliced peaches in heavy syrup, undrained

Prepare the foil packets: Tear off 6 squares of heavy-duty aluminum foil, each about 12x12 inches. Lightly mist the centers with nonstick spray if you have it (optional, but helps prevent sticking).

Layer the peaches: Divide the canned peaches evenly among the foil squares, spooning both the fruit and some of the syrup into the center of each piece of foil. Aim for about 1/3 of a can of peaches per packet so everyone gets plenty of fruit and juice.

Add the dry cake mix: Sprinkle a generous layer of dry yellow cake mix over the peaches in each packet. You want to mostly cover the peaches but not pack it down—about 1/4 to 1/3 cup of dry mix per packet works well. It’s okay if some peaches peek through.

Drizzle with butter: Slowly drizzle the melted butter over the dry cake mix in each packet, trying to moisten as much of the cake mix as possible. This is what turns the cake mix into those golden, buttery crumbles on top. If a few dry spots remain, they’ll still hydrate from the peach syrup as it cooks.

Seal the packets: Bring two opposite sides of the foil up over the filling and fold them together tightly several times to seal, then fold in the remaining two sides so you have a snug, well-sealed packet. Make sure there are no big gaps where liquid can leak out.

Arrange in the slow cooker: Place the foil packets in a single layer in the bottom of a large slow cooker (a 6-quart works well). A few can slightly overlap or lean against each other, but try to keep them mostly flat so the topping cooks evenly.

Cook until bubbling and golden: Cover the slow cooker with the lid and cook on HIGH for 2 to 2 1/2 hours, or on LOW for 3 1/2 to 4 hours. The packets are done when the peaches are very soft and bubbling and the cake mix has turned into a moist, golden, buttery crumble on top. Carefully open one packet to check; watch out for hot steam.

Serve: Turn off the slow cooker and let the packets sit with the lid off for about 5 minutes to cool slightly. Use tongs to lift each packet out. Open the foil carefully (the steam is hot!), then serve the cobbler right in the foil pouch or transfer it to bowls. Top with ice cream, whipped cream, or your favorite toppings and enjoy.

Storage and reheat: If you have leftovers, let the packets cool, then seal and refrigerate them for up to 3 days. Reheat a packet in the oven at 350°F for about 10–15 minutes or in the air fryer at a lower temp until warmed through. Avoid microwaving the foil; if using the microwave, transfer the cobbler to a microwave-safe bowl first.

Use different fruits: Swap the peaches for canned cherries, apples, pears, or a mixed fruit cocktail—just keep the juice, because that helps create the saucy cobbler texture. Try a peach–raspberry combo by adding a handful of fresh or frozen berries to each packet. Change the cake flavor: Yellow cake mix is classic, but white, butter, spice, or even lemon cake mix all work. A spice cake mix with canned apples tastes like an easy apple crisp. Add warm spices: Sprinkle a little cinnamon or pumpkin pie spice over the peaches before the cake mix for extra cozy flavor. (This technically adds more than 3 ingredients, but the base recipe stays the same.) Make it extra crunchy: If you don’t mind bending the 3-ingredient rule, toss a few chopped pecans or walnuts on top of the cake mix before adding the butter for crunch. Portion flexibility: For fewer people, just assemble as many packets as you need and store the extra dry cake mix for another time. For a crowd, you can double the recipe and stack a second layer of packets on top in a large slow cooker; rotate the top and bottom layers halfway through for even cooking. Prep ahead: Assemble the foil packets up to 8 hours ahead, refrigerate them on a sheet pan, and then transfer to the slow cooker when you get home from work. You may need to add 15–20 minutes to the cook time if starting from chilled. Camping or oven option: These packets also work in a 375°F oven for about 20–25 minutes on a baking sheet, or over low, indirect heat on a grill or campfire grate, making them a fun dessert beyond the slow cooker too.