Nancy's Best Chocolate Cheesecake

A proper baked chocolate cheesecake built on a sweet pastry crust instead of the usual graham cracker crumb. One and a half pounds of cream cheese whipped smooth with sugar, eggs, melted semisweet chocolate, and a quarter cup of sour cream gives the filling that dense, satin-smooth character that separates restaurant-style cheesecake from the grocery store kind.

The crust is closer to a sugar cookie than a graham base. Flour, sugar, butter, egg yolk, and vanilla cut together and pressed into the pan with floured fingertips up the sides about an inch. It bakes with the filling rather than pre-baking, so it stays tender under the cheesecake while still crisping where it meets the pan.

Sour cream in the filling is the quiet workhorse. Just a quarter cup, but it keeps the chocolate from turning waxy as it cools and adds a faint tang that balances the sweetness. The lattice drizzle on top (melted semisweet chocolate thinned with butter) sets firm in the fridge and doubles as a serving marker for neat slices.

Pro Tips

• Bring cream cheese to full room temperature before mixing. Cold cheese leaves lumps that won’t break down even at high speed.
• Don’t overbeat once the eggs go in. Whipping too much air into the batter causes the cheesecake to puff and crack as it cools.
• Run a thin spatula around the edge while still warm. This releases the cheesecake so it can shrink inward as it cools instead of tearing and cracking.
• Chill at least two hours before topping. A warm cake melts the chocolate drizzle into a puddle instead of a lattice.

Variations

• Swap semisweet chocolate for bittersweet or dark chocolate for a more intense, less sweet filling.
• Use a crushed chocolate cookie crust in place of the pastry for a deeper chocolate profile.
• Top with raspberries or fresh cherries and a dusting of cocoa powder instead of the chocolate lattice.