Preheat and Prepare Pans
Preheat oven to 180°C / 160°C fan / Gas Mark 4.
Grease and line two 8-inch cake pans or Victoria sandwich tins with parchment. Ensure pans are at least 2cm deep.
Mix Dry Ingredients
In a large bowl, sift together:
Cake flour
Bicarbonate of soda
Pinch of salt
Mix Wet Ingredients
In another bowl, whisk together:
Sour cream
Splash of whole milk
Vanilla extract (plus vanilla flavoring if using)
Optional: small amount of neutral oil for added moisture
Cream Butter, Sugar & Add Eggs
In a mixing bowl, beat butter and light brown sugar for 3–5 minutes until light and fluffy.
Add eggs one at a time, mixing well after each.
Combine Mixtures
Alternately add dry and wet ingredients to the creamed butter mixture, starting and ending with dry. Mix until a smooth, thick batter forms.
Gently fold in the chopped pecans.
Bake
Divide batter evenly between pans.
Bake for 25–30 minutes, until tops are golden and a skewer comes out clean or with a few moist crumbs.
Cool in pans for 10 minutes, then transfer to a wire rack to cool completely.
Make the Caramel Frosting
In a bowl, beat together:
Confectioners sugar
Light corn syrup
Whipping cream
Vanilla flavoring
Pinch of salt
Mix until thick and spreadable. Add a teaspoon of cold water if needed to loosen the frosting.
Frost the Cake
Once cakes are cool, spread frosting between layers and over the top and sides.
For a smooth finish, use an offset spatula or warm bench scraper (hot knife method).
Add texture by swirling the frosting or using a piping bag.