1. Preheat oven to 350F.
2. Combine butter and sugar in the bowl of a mixer. Beat until light and fluffy, about 4 minutes. Add egg yok, and blend well. Add flour and almonds and mix well. Press 2/3 butter mixture in a 9 x 13-inch dish. Bake 20 minutes. Remove from oven. Spread with jam, and spinkle with remaining butter rmixture. Bake 35 minutes. Cool and cut into 24 bars.