These 3-ingredient lemon bars are the dessert my mother-in-law insists I bring to every family gathering—and she’s right, they vanish before the main course ever hits the table. This is a very Midwestern, potluck-friendly shortcut recipe that leans on a boxed lemon cake mix and canned lemon pie filling to deliver bright citrus flavor with almost no effort.
Melted butter transforms the cake mix into a soft, crumbly crust and topping, while the pie filling bakes into a glossy, vibrant yellow layer. It’s the kind of practical, crowd-pleasing recipe busy home cooks keep in their back pocket for holidays, church suppers, and last-minute invitations.
Serve these lemon bars chilled or at room temperature, cut into small squares so they’re easy to grab from the glass baking dish on a buffet. They pair nicely with hot coffee or black tea, which balances the sweetness and bright lemon flavor.
For a more complete dessert spread, offer a bowl of fresh berries or a simple fruit salad alongside. If you’d like something creamy, a small dollop of lightly sweetened whipped cream on each bar works well, but they’re designed to stand on their own—especially at casual gatherings where people are nibbling as they chat.
3-Ingredient Lemon Bars
Servings: 16
Ingredients
1 box (15.25 to 16.5 ounces) lemon cake mix
1/2 cup (1 stick, 113 g) unsalted butter, melted and slightly cooled
1 can (21 ounces) lemon pie filling
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