2 2/3 c FLOUR 1/2 ts SODA 1/4 ts SALT 1 c LT brOWN SUGAR, PACKED 1/2 c SUGAR 1 c BUTTER, SOFTENED 1 lg EGG 1 ts BANANA LIQUEUR OR EXtrACT 3/4 c MASHED RIPE BANANA 2 c SEMISWEET CHOCOLATE CHIPS 1 c CHOPPED WALNUTS PREHEAT OVEN TO 300*F. IN A MEDIUM BOWL, COMBINE FLOUR, SODA AND SALT. MIX WELL AND SET ASIDE. IN A LARGE BOWL WITH AN EXLECtrIC MIXER, BLEND SUGARS AT MEDIUM SPEED. ADD BUTTER AND MIX TO FORM A GRAINY PASTE, SCRAPING DOWN THE SIDES OF THE BOWL. ADD EGG, LIQUEUR AND BANANA, AND BEAT AT MEDIUM SPEED UNTIL SMOOTH. ADD THE FLOUR MIXTURE, 1 CUP OF THE CHOCOLATE CHIPS AND THE WALNUTS AND BLEND AT LOW SPEED UNTIL JUST COMBINED. DROP BY ROUNDED TABLESPOONS ONTO UNGREASED COOKIE SHEETS, 2 INCHES APART. SPRINKLE COOKIES WITH CHOCOLATE CHIPS, 6 TO 8 PER COOKIE. BAKE 25-27 MINUTES UNTIL COOKIE EDGES BEGIN TO brOWN. trANSFER IMMEDIATELY TO A COOL SURFACE.