We are again deviating from our theme but when we posted blueberry pancakes, my wife said we had to post this one as well. So here we go; my wife's blueberry bread, which is "berry" excellent. She makes a large amount as you can see and cuts the resulting sheet cake into individual servings then freezes it. We often take this to work as breakfast.
I ask my wife to take over: The recipe will make one 10x15" sheet cake.
Prepare the pan by lining it with parchment paper. Grease the bottom of the pan, put in the parchment paper, then grease the top of the paper. (This allows the cake to release from the pan with no fuss or muss). Next, Cream 1 cup butter until light and fluffy. (This process is important because it gives the cake its lift and crumb). Add 2 2/3 cup sugar and keep creaming. Add 4 eggs and cream until yellow light and fluffy. In a separate bowl mix 5 1/3 cup flour, 4 tsp. baking powder, 1 tsp baking soda, 1/2 tsp salt. In yet another bowl add 3 cups of buttermilk and 4 tsp vanilla. Alternatively add the creamed mixture and buttermilk to the flour. Pour into prepared pans. Next "install" the blueberries. (If the blueberries are added to the batter while it is being mixed they tend to clump. When this happens the batter around the clump doesn't cook because of the moisture in the berries. This makes for partially cooked patches that are unpleasant. Also during cooking the berries tend to sink to the bottom and form a wet mass.) To install the berries scatter them across the top of the batter fairly evenly (below left). Then take your fingers and gently push them slightly below the surface (below center). The batter will rise around them as it cooks. If they sink its only to the middle of the cake and they are generally distributed so the batter cooks evenly. (if you don't do this step the berries just ride on the surface as the batter rises and they get over cooked.) Cook at 350 degrees for about an hour for this size (10x15") pan (below right).
This is a very luscious form of blueberry "muffin". It's another recipe that says 'summer is here'. The texture of the cake is very light and moist. The blueberries add a burst of juice and fresh flavor to the cake.