Preheat oven to 350 degrees F. Line a 13x9x2-inch baking pan with foil, extending foil over the edges of the pan. Grease foil; set pan aside.
In a large bowl, beat butter medium to high speed for 30 seconds. Add brown sugar and baking powder. Beat until combined, scraping side of bowl occasionally. Beat in egg until combined. Beat in as much of the flour as you can with the mixer. Using a wooden spoon, stir in any remaining flour, the oats, and almonds.
Remove 1/2 cup of the dough and set aside. Press the remaining dough evenly into the bottom of the prepared baking pan. Spread with preserves. Crumble the remaining dough evenly over preserves layer.
Bake in the preheated oven about 35 minutes or until lightly browned. Cool completely in pan on a wire rack. Using the edges of the foil, lift the uncut cookies out of the pan. Cut into bars.