Step 1: Prepare the Batter

1️⃣ Preheat oven to 350°F (175°C) and grease a 9×13-inch sheet cake pan.
2️⃣ In a large bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.
3️⃣ In another bowl, beat eggs and sugar until light and fluffy.
4️⃣ Add melted butter, vanilla extract, and kefir, then mix until well combined.
5️⃣ Gradually fold in the dry ingredients, stirring gently until the batter is smooth.

💡 Pro Tip: Avoid overmixing to keep the cake light and airy.

Step 2: Bake the Cake

1️⃣ Pour the batter into the prepared cake pan and spread evenly.
2️⃣ Bake for 30–35 minutes, or until a toothpick inserted in the center comes out clean.
3️⃣ Remove from the oven and let the cake cool in the pan for 10 minutes.
4️⃣ Transfer to a wire rack to cool completely before adding any frosting or glaze.

Step 3: Frosting & Serving Suggestions

Enjoy the cake as is, or try one of these toppings:

✅ Powdered sugar dusting – For a simple and elegant finish.
✅ Vanilla glaze – Mix 1 cup powdered sugar, 2 tbsp milk, and 1 tsp vanilla extract.
✅ Cream cheese frosting – Perfect for a tangy, creamy topping.
✅ Chocolate drizzle – Melt dark chocolate and drizzle over the cake.
✅ Honey butter glaze – Mix melted butter, honey, and cinnamon for a warm, sweet touch.