These are probably the least fattening brownies you will ever have (without fake ingredients or chemicals to make it "low fat")...133 calories per bar and 3 grams of fiber. These aren't gooey like regular brownies but are more cake-y. But the flavor is really yummy. The purees are spinach and carrots (I didn't have any carrots on hand the second time I made these so I used applesauce instead and it still was good). Jessica Seinfeld wrote on this recipe to let them cool all the way to let the spinach taste completely disappear. We couldn't wait that long and we didn't notice the spinach taste.
3 oz. semisweet or bittersweet chocolate (I used chocolate chips)
1/2 cup carrot puree
1/2 cup spinach puree
1/2 cup packed brown sugar
1/4 cup unsweetened cocoa powder
2 T butter
2 t. vanilla
2 large egg whites (I added a yolk just cause I didn't want to waste it)
3/4 cup flour
1/2 t. baking powder
1/2 t. salt
Preheat oven to 350 degrees. Coat a 8x8 inch pan with cooking spray. Melt the chocolate either in double boiler or microwave (on low heat). In large bowl, combine the melted chocolate, vegetable purees, sugar, cocoa powder, butter, and vanilla and whisk until smooth and creamy, 1 to 2 minutes. Whisk in egg whites. Stir in flour, baking powder, and salt with a wooden spoon. Pour the batter into the pan and bake 35 to 40 minutes (I reduced it to about 20 minutes so they weren't too dry). Cool completely in the pan before cutting into bars.