3 rhubarb streusel bars with Recipes

quick-cooking oats, all-purpose flour, brown sugar (packed), butter, granulated sugar, all-purpose flour, ground ginger, sliced rhubarb, powdered sugar , sifted, ground ginger, orange juice or 3 -4 tsp milk

granulated sugar, cornstarch, rhubarb, cut in 1 pieces, strawberry jam or 1 1/4 cups preserves, ground cinnamon, grated orange zest (optional), all-purpose white flour, old fashioned oats, granulated sugar, ground cinnamon, salt, unsalted butter, very soft, but not melted, egg, lightly beaten with 1 1/2 tsps water