A Whole Tray of Tender Mini Cakes: These Sour Cream Tartlets Take Just 30 Minutes

A traditional Smetannik cake ('smetana' means 'sour cream' in Russian) is beloved for its tangy, creamy profile, but it usually demands hours of baking layers and waiting for the cream to soak in. This version bypasses the labor by using pre-made tartlet shells as a base, delivering that same nostalgic flavor and velvet texture in a fraction of the time. Prep and cook time: 30 minutesYield: 20 pieces The Ingredients Large tartlet shells — 20 pcs Sour cream (at least 20% fat) — 400 g Eggs — 2 Sugar — 6 tbsp Potato starch — 2 tbsp Vanillin — 1 packet (1-2 g) Dark chocolate — 100 g Why This Works The key to the filling is the combination of sour cream and potato starch. While the sour cream provides the characteristic acidity and richness, the starch acts as a stabilizer. Once it hits the heat of the oven, the starch binds the moisture, transforming a liquid mixture into a dense, stable custard that holds its shape without becoming rubbery.