Rhubarb Almond Breakfast Bars

old fashioned oats (not quick oats) 1/2 cup all-purpose flour 1/4 cup whole wheat flour 1/2 cup sweetened flaked coconut 1/2 teaspoon kosher salt 1/3 cup unsalted butter, melted 1 cup roasted rhubarb jam (or use your favorite) 1/3 cup sliced almonds