1. Preheat oven to 350 degrees F. Grease a 13x9x2-inch baking pan.
2. In a large bowl, beat butter with an electric mixer on medium to high speed for 30 seconds. Add brown sugar and baking powder. Beat until combined, scraping side of bowl occasionally. Beat in egg and almond extract until combined. Add flour and mix until blended. Stir in the oats and almonds.
3. 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.
4. Bake in the preheated oven about 35 minutes or until lightly browned. Cool completely in pan on a wire rack. Cut into bars.