The golden ratio of baking: equal parts flour, sugar, butter, and eggs. Fluffy, melt-in-your-mouth crumb with pure vanilla bean perfume.
Preheat oven to 350°F (175°C). Grease two 8-inch round aluminum cake pans and line the bases with rounds of parchment paper.
In a stand mixer fitted with the paddle attachment, beat 225g softened butter and 225g sugar on medium-high speed for 5 full minutes until extremely pale, fluffy, and light as whipped cream.
Whisk eggs with vanilla paste. Add eggs in 4 separate additions, beating for 30 seconds after each. If the batter shows signs of curdling, add 1 tablespoon of flour to re-emulsify.
Sift the 225g flour over the batter. Using a metal spoon or large spatula, gently fold in a figure-eight motion until combined. Gently stir in 30g milk until batter drops smoothly from a raised spoon.
Divide batter evenly between the two pans (about 475g per pan). Smooth the tops. Bake for 23-25 minutes until golden, springy to a gentle touch, and shrinking slightly from pan edges.
Cool in pans for 10 minutes, then invert onto wire racks. Once cold, spread raspberry conserve on one sponge, layer with whipped chantilly cream, top with the second sponge, and dust with powdered sugar.
The Equal Weight (Pound Cake) Principle: Equal weights of fat, sugar, egg, and flour create the ultimate structural balance: tenderizing agents (fat and sugar) perfectly match structural builders (egg protein and flour gluten).
Temperature of Butter Matters: Butter must be 65-68°F (18-20°C). If butter is too warm (liquid), it cannot trap micro-air bubbles; if too cold, it remains in greasy chunks.
Use our calculator to convert custom quantities or alternative flours for this recipe.
Technique note: Fluff flour with a fork, spoon gently into the cup until heaping, then sweep level with a straight edge. Never scoop directly.
Verified standard: 1 US cup of All-Purpose Flour = 120 grams (King Arthur Baking & USDA FoodData Central (FDC ID: 168936)).
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