Preheat oven to 375F. Beat butter in a large bowl until smooth. Add the first 6 ingredients and beat until well blended and crumbly. Reserve 1/3 of the mixture for topping. Press remaining 2/3 crumb mixture onto bottom of un-greased 13 x 9 inch baking pan. Bake 15 minutes; let cool on wire rack for 5 minutes.
Combine preserves and almond extract; spread over crust; sprinkle evenly with reserved crumb mixture. Return to oven; bake 20 to 25 minutes or until topping is golden and filling is slightly bubbly. Cool completely in pan on wire rack. Yield: 2-1/2 dozen bars
Note: If using raspberry or blackberry preserves, buy the seedless variety for a smoother filling.