Mom's Walnut Cake

This walnut bundt cake flips upside down to reveal a gorgeous sticky walnut topping. Brown sugar, butter, Karo syrup, and a splash of pineapple juice boil together into a caramel that goes into the pan first, followed by a layer of walnuts and then the batter. When you turn it out after baking, those nuts sit on top in a glossy, toffee-like glaze.

The cake itself is lighter than you’d expect. Buttermilk and baking soda give it tenderness and tang, while six whipped egg whites folded into the batter create real lift. The technique of adding flour alternately with buttermilk in four steps keeps everything smooth and prevents the batter from breaking.

That pineapple juice in the syrup is a small but smart move. The acid keeps the caramel from crystallizing and adds a faint tropical sweetness that plays well against the earthy walnuts.

Chef Tips

• Beat egg whites until stiff but not dry. Over-beaten whites get grainy and don’t fold in smoothly. Stop when they hold a firm peak but still look glossy.
• Boil the syrup at a true rolling boil for the full 3 minutes. Under-boiled syrup will be too thin and soak into the cake instead of forming a glaze.
• Pave the walnuts in a single layer. Overlapping creates thick spots that don’t caramelize evenly.
• Let the cake cool in the pan for 10 minutes before inverting. Too soon and it falls apart; too long and the caramel sets like cement.

Variations

• Almond Amaretto version: The recipe itself suggests this one. Swap walnuts for almonds and drizzle the cooled cake with Amaretto instead of walnut liqueur.
• Rum walnut cake: Replace the pineapple juice in the syrup with dark rum for deeper, boozier caramel notes.