Good-Cooking - Almond, Orange and Polenta Cake

Ingredients

• 1 cup (2 sticks) butter
• 1 cup superfine sugar
• 2 cups ground almonds
• 1 teaspoon vanilla extract
• 3 eggs
• Grated zest of 2 oranges (set a few pinches aside for garnish, if desired)
• Juice of 1 orange
• 1 cup polenta
• 1 teaspoon baking powder
• Pinch of salt
• Crème fraîche or whipped cream, to taste
• Vin Santo or almond-flavored liqueur, to taste
• Sliced almonds (optional)
• Orange zest (optional)