A tender vanilla snack cake with a soft crumb, ready for salted caramel mousse.
8 steps, about 40 minutes start to finish.
Preheat oven to 350 degrees F.
Grease an 8x8 inch baking pan.
Whisk together melted butter, sugar, eggs, vanilla extract, and vanilla powder.
Stir in buttermilk.
Add flour, salt, baking powder, and baking soda and mix until just combined.
Pour into prepared pan.
Bake 20 to 30 minutes until a toothpick inserted comes out clean.
Cool before topping with salted caramel mousse.
“Stir just until the flour disappears, since overmixing develops the gluten and gives you a tough, rubbery cake instead of a tender one. Let it cool fully before the caramel mousse goes on.”