Try this homemade London Sponge recipe the whole family will love. Made with confectioners sugar, cornstarch, eggs and cream of tartar. Easy step-by-ste…
This London Sponge relies on simple, everyday ingredients such as sifted confectioners sugar, sifted cornstarch, large eggs, separated and cream of tartar. It comes together quickly and makes 4 servings, at about 494 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.
Updated Jun 30, 2026