Polenta Cake with Late-Summer Berries

Ingredients

• 1 teaspoon double-acting baking powder 
• 1 cup blackberries 
• 1 cup blueberries 
• 6 tablespoons butter softened
• 2 large egg whites 
• 2 large eggs 
• 1.5 cups flour all-purpose
• 0.3 cup polenta dry finely
• 1 cup raspberries fresh
• 10 ounce raspberries unsweetened frozen thawed
• 0.1 teaspoon salt 
• 2 cups strawberries halved
• 1 cup sugar 
• 1 tablespoon sugar 
• 0.5 teaspoon vanilla extract 
• 2 tablespoons water 

Equipment

• food processor
• bowl
• frying pan
• oven
• knife
• whisk
• wire rack
• sieve
• blender
• loaf pan
• grill
• measuring cup

Directions

1. Preheat oven to 35
2. To prepare cake, coat an 8 x 4-inch loaf pan with cooking spray; set prepared loaf pan aside.
3. Lightly spoon all-purpose flour into dry measuring cups; level with a knife.
4. Combine flour, polenta, baking powder, and salt in a medium bowl, stirring with a whisk; set aside.
5. ???,,vanilla extract and whole eggs in a small bowl, stirring well with a whisk.
6. Combine 1 cup sugar and butter in a medium bowl; beat with mixer at medium speed until mixture is light and fluffy (about 5 minutes). Gradually add vanilla extract mixture and egg whites to sugar mixture, beating well (about 2 minutes). Gradually add flour mixture, and stir batter just until moist.
7. Pour cake batter into prepared pan.
8. Bake at 350 for 1 hour or until a wooden pick inserted in center comes out clean. Cool cake in pan 10 minutes on a wire rack; remove cake from pan. Cool completely on wire rack.
9. Cut cake into 9 equal slices.
10. To prepare berry topping, combine 1 tablespoon sugar, water, and thawed raspberries in a food processor or blender; process until the mixture is smooth. Strain mixture through a sieve over a bowl, pressing with the back of a spoon; discard solids.
11. Combine raspberry sauce, strawberries, blueberries, fresh raspberries, and blackberries in a large bowl; toss gently to combine.
12. Prepare grill to medium-high heat.
13. Place cake slices on grill rack coated with cooking spray; grill 1 minute on each side or until golden brown and grill marks form.
14. Serve grilled cake slices with berry topping.