Chess pie squares with cake mix are a shortcut version of the classic Southern chess pie, transforming a box of yellow cake mix into a rich, tangy, custard-like filling with a golden, slightly crisp top. The cake mix acts as a stabilizer and sweetener, so you get the dense, gooey texture of traditional chess pie without the fuss of making pastry or measuring multiple flours. This recipe is genuinely useful for busy bakers who want a crowd-pleasing dessert with minimal effort and maximum flavor.
Ingredients
- 1 box (15.25 oz / 432 g) yellow cake mix (dry, unprepared)
- 1/2 cup (1 stick / 113 g) unsalted butter, melted and slightly cooled
- 4 large eggs, at room temperature
- 1/2 cup (100 g) granulated sugar
- 1/2 cup (120 ml) buttermilk (or 1/2 cup milk + 1 tsp lemon juice, let sit 5 min)
- 1 teaspoon vanilla extract
- 1 tablespoon cornmeal (optional, for authentic chess pie texture)
- Powdered sugar, for dusting (optional)
Instructions
- Preheat your oven to 350°F (175°C). Grease a 9×13-inch (23×33 cm) baking pan with butter or nonstick spray.
- In a large mixing bowl, combine the dry cake mix, melted butter, eggs, sugar, buttermilk, vanilla, and cornmeal (if using). Beat with an electric mixer on medium speed for 2 minutes until the batter is smooth and slightly thickened. The batter will be thin—that’s correct.
- Pour the batter into the prepared pan. Tap the pan gently on the counter to release any air bubbles.
- Bake for 40–45 minutes, until the edges are golden brown and the center is set but still slightly jiggly (like a cheesecake). A toothpick inserted near the center should come out with moist crumbs, not wet batter. The internal temperature of the egg-based filling should reach 160°F (71°C), which is the USDA FSIS safe minimum for egg dishes.
- Cool completely in the pan on a wire rack, about 30 minutes. The squares will firm up as they cool.
- Cut into 16 squares and dust with powdered sugar just before serving, if desired.
Tips
- Substitutions: Use a gluten-free yellow cake mix for a gluten-free version; the texture will be slightly more crumbly but still delicious. For a richer flavor, substitute half the buttermilk with sour cream.
- Storage: Store leftovers in an airtight container in the refrigerator for up to 4 days. Bring to room temperature before serving or enjoy chilled.
- Common mistake: Overbaking is the biggest issue—the squares will become dry and cakey instead of gooey. Pull them out when the center still has a slight jiggle; it will set as it cools.
- Pan size: If you use an 8×8-inch pan, increase baking time to 50–55 minutes and check doneness with a thermometer. A 9×13 pan is ideal for even baking.
Serving Suggestions
Serve these squares as a dessert with a dollop of whipped cream or a scoop of vanilla ice cream. They also pair beautifully with fresh berries or a drizzle of caramel sauce. For a brunch spread, cut them smaller and serve with coffee or sweet tea.
Variations
- Lemon Chess Squares: Add 2 tablespoons of lemon zest and replace the vanilla with lemon extract for a bright, citrusy twist.
- Chocolate Chess Squares: Use a chocolate cake mix and add 1/4 cup (25 g) cocoa powder to the batter; reduce sugar to 1/4 cup (50 g).
- Brown Butter Chess Squares: Brown the butter before melting it (cook until golden and nutty, then cool) for a deeper, nutty flavor.
- Nutty Chess Squares: Fold in 1/2 cup (60 g) chopped pecans or walnuts after beating the batter.
Storage and Reheating
Store the squares in an airtight container in the refrigerator for up to 4 days. To freeze, wrap individual squares in plastic wrap and place in a freezer-safe bag; they will keep for up to 3 months. Thaw overnight in the refrigerator. To reheat, microwave a square for 15–20 seconds until warm, or warm in a 300°F (150°C) oven for 5–8 minutes. Avoid reheating more than once, as the texture can become rubbery.
Frequently Asked Questions
Can I use a different cake mix flavor? Yes, any flavor works. White, butter, or even spice cake mix will change the flavor profile; adjust the sugar accordingly (if using a sweet mix like Funfetti, reduce sugar to 1/4 cup).
Why is my filling not set after baking? It may need a few more minutes in the oven. The center should be slightly jiggly but not liquid. If it’s still very wobbly, bake for an additional 5 minutes and check again. Also, ensure your eggs are at room temperature to promote even cooking.
Can I make this without eggs? For an egg-free version, you can use a commercial egg replacer, but the texture will be less custardy. Alternatively, use 1/2 cup (120 g) unsweetened applesauce plus 1 teaspoon baking powder to mimic the structure, but expect a cakier result.
Do I need to refrigerate these? Yes, because they contain eggs and dairy. Refrigerate within 2 hours of baking, and they will keep for up to 4 days. They can be served chilled or at room temperature.
Can I use a glass baking dish? Yes, but reduce the oven temperature by 25°F (15°C) to prevent over-browning on the edges, and check doneness a few minutes earlier.
Why does my top crack? Cracking is normal for chess pie squares due to the custard-like filling. To minimize, avoid overmixing and don’t open the oven door during baking.
Related
- Is Almond Flour Just Ground Almonds?
- Is Almond Flour Healthy? Facts & How to Use It
- Is Almond Flour Low Carb? Carbs & Uses
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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