Ingredients
1/3 cup butter
1/2 cup brown sugar
1 teaspoon light corn syrup
1 cup chopped Diamond Walnuts
1/2 box Betty Crocker Yellow Cake Mix (prepared according to package directions)
Method
Preheat the oven to 350°F (175°C). In a small saucepan, melt 1/3 cup butter over medium heat. Stir in 1/2 cup brown sugar and 1 teaspoon light corn syrup. Bring the mixture to a gentle boil, stirring constantly, then remove from heat.
Pour the hot butter and sugar mixture into an ungreased 9-inch square baking pan, spreading it evenly across the bottom. Sprinkle 1 cup of chopped Diamond Walnuts over the hot syrup in a single layer. Carefully spread half of the prepared Betty Crocker Yellow Cake Mix batter over the walnuts and syrup, smoothing the top so it cooks evenly.
Bake in the preheated oven for about 35 minutes, or until the cake is golden and a toothpick inserted near the center comes out clean. Remove the pan from the oven and immediately invert it onto a serving plate. Leave the pan in place for about one minute to allow the topping to settle, then lift the pan off to reveal the walnut topping.
Allow the cake to cool slightly before slicing and serving. This dessert is delicious warm, and can be served plain or with a scoop of vanilla ice cream for extra indulgence.