Step 1: Prepare to Bake
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Preheat your oven toΒ 375Β°F (190Β°C).
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Grease a 9-inch round cake pan and line the bottom with a circle of parchment paper, then grease the paper for foolproof release.
Step 2: Combine the Dry Ingredients
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In a large mixing bowl, whisk together theΒ flour, cornmeal, sugar, baking powder, and salt. This ensures the leavening is evenly distributed for a perfect rise.
Step 3: Whisk the Wet Ingredients
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In a separate medium bowl, whisk theΒ sour cream, melted butter, eggs, and vanilla extractΒ until the mixture is smooth and completely combined.
Step 4: Bring the Batter Together
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Pour the wet ingredients into the dry ingredients. Using a spatula,Β gently foldΒ until the flour is just incorporated and no dry streaks remain. Be careful not to overmixβa few lumps are okay!
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In a small bowl, stir together theΒ 2 tablespoons of sugar and 1 teaspoon of cinnamon. Add theΒ 1/4 cup of melted butterΒ and mix until it forms a loose, sandy paste.
Step 6: Assemble and Swirl
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Pour the batter into your prepared pan and smooth the top with the spatula.
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Drizzle the cinnamon-sugar butter mixture evenly over the entire surface.
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Use a knife or a toothpick to gentlyΒ swirl the topping into the batter, creating beautiful marbled patterns.
Step 7: Bake to Perfection
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Bake forΒ 25-30 minutes, or until the edges are golden and a toothpick inserted into the center of the cake comes out clean.
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Let the cake cool in the pan on a wire rack forΒ at least 15 minutes.
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Carefully run a knife around the edge, then invert the cake onto the rack, remove the parchment paper, and flip it right-side-up to cool completely.
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Slice and serve at room temperature for the best flavor and texture.
π‘ Bakerβs Notes & Tips
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Pan Choice:Β A 9-inch square baking pan can also be used. The baking time may be slightly less, so start checking at 20 minutes.
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Donβt Overmix:Β The key to a tender cake is mixing the batter until the ingredients areΒ justΒ combined. Overmixing develops gluten and can make the cake tough.
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Flavor Variations:Β Add the zest of one orange to the wet ingredients for a bright, citrusy twist, or fold 1/2 cup of fresh blueberries into the batter at the end.
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Serving Suggestion:Β This cake is wonderful on its own, but itβs truly sublime when served warm with a dollop of whipped cream or a scoop of vanilla ice cream.