Classic Vanilla Butter Cake with Buttermilk Sauce

This Vanilla Butter Cake is a tender, golden-yellow cake with a delicate crumb—baked in a simple 9x13 pan and drenched in a warm, tangy-sweet buttermilk sauce that soaks in as it cools. Inspired by Depression-era and Southern farmhouse baking, it’s humble, frugal, and deeply satisfying.
No mixer needed. No fancy layers. Just one bowl, one pan, and a sauce that turns a simple cake into something truly special.
Why You’ll Love This Recipe
🧈 Only 8 simple ingredients (most already in your pantry)
⏱️ 15 minutes prep, 35 minutes bake
💛 One bowl + one pan = easy cleanup
💸 Costs under $6—feeds 12 generously
🌾 Naturally nut-free & easily gluten-free (use GF flour)
Ingredients You’ll Need
For the Cake:
2 cups (250g) all-purpose flour
1½ cups (300g) granulated sugar
¾ cup (1½ sticks / 170g) unsalted butter, softened
3 large eggs
1 cup (240ml) whole milk
2 tsp vanilla extract
2 tsp baking powder
½ tsp salt
For the Buttermilk Sauce:
½ cup (1 stick / 115g) unsalted butter
1 cup (200g) granulated sugar
½ cup (120ml) buttermilk
1 tsp vanilla extract
Pinch of baking soda
💡 Pro Tips:Use room-temperature ingredients for even mixing.Don’t overmix—stir just until combined for a tender crumb.Pour sauce while cake is hot—it absorbs best when warm.
Step-by-Step Instructions (Tender, Moist, Foolproof)

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