½ cup vegetable oil (key for moisture)
1 cup plain yogurt or sour cream
1 tbsp vanilla extract
Step-by-Step Instructions
Step 1: Prepare
Preheat oven to 170°C / 340°F.
Grease and line an 8-inch cake pan with parchment paper.
Step 2: Mix Dry Ingredients
In a bowl, whisk:
Flour
Baking powder
Baking soda
Salt
Set aside.
Step 3: Mix Wet Ingredients
In another bowl:
Beat eggs and sugar until light and pale.
Add oil and mix well.
Add yogurt and vanilla.
Mix until smooth and creamy.
Step 4: Combine (Gentle!)
Add dry ingredients to wet in 2–3 batches.
Fold gently with a spatula.
Do not overmix — stop as soon as smooth.
Lumps are okay. Overmixing kills softness.
Step 5: Bake
Pour batter into pan.
Tap pan gently to remove air bubbles.
Bake 35–40 minutes.
Toothpick should come out clean or with soft crumbs.
Step 6: Cool Properly
Let cake cool 10 minutes in pan.
Remove and cool completely on a rack.
Secrets to Extreme Softness
Oil instead of butter = long-lasting moisture
Yogurt = tender crumb
Low baking temperature = even softness
Room-temperature ingredients Optional Softness Boost (Highly Recommended)
Brush warm cake with:
¼ cup warm milk + 1 tsp sugar + a few drops vanilla
This makes it bakery-level soft.
Variations
Chocolate: replace ¼ cup flour with cocoa powder
Lemon: add zest + 2 tbsp lemon juice
Orange: replace milk with fresh orange juice
Result
A cake so soft it springs back when touched — perfect plain, frosted, or layered.
