STEP 1: Preheat the oven to 350F.
STEP 2: In a large bowl beat the butter with sugar until fluffy. While beating add the egg.
STEP 3: Gradually add the cocoa , flour and salt. Mix lightly only until combined.
STEP 4: Form the dough shape 1" balls and put them onto the cookies sheet about 1" apart.
STEP 5: Make an indentation in the top of each cookie. Put little bit of apricot jam in each indentation.
STEP 6: Bake for 12 to 15 minutes, or until firm. Let the cookies cool for 2-3 minutes then transfer them onto the cooling rack.
STEP 7: In a microwave or small saucepan melt semi-sweet chocolate chips and butter until smooth. Drizzle over the Sacher cookies.