Optional you can use chopped pecans or walnuts in place of the oats. Store at room temperature in a sealed airtight container up to 4 days. Reheat in the oven at 350F for 8-10 minutes. Whole wheat pastry flour (ww pastry flour is lighter than regular whole wheat) gives the cake an earthy nutty flavor that we love and adds nutrition. Feel free to use all purpose white flour or half wheat & half white. Sugar- 1/2 cup makes this cake just lightly sweet complementing the streusel topping. Adding 3/4 cup of sugar does richen the overall flavor of the cake. We prefer to use fresh blueberries but frozen works too. Be sure to add while still frozen, don’t let them thaw. The cake may take another 10 minutes to bake.
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