PREHEAT OVEN TO 400. BROWN BEEF IN LARGE SKILLET. DRAIN. ADD GREEN PEPPER AND COOK 2 MINUTES. STIR IN WATER, TOMATO PASTE AND SPAGHETTI SAUCE MIX. COVER AND SIMMER 10 MINUTES. SPRINKLE HALF OF THE PARMESAN CHEESE OVER BOTTOM OF PIE SHELLL. SPREAD HALF MEAT MIXTURE IN PIE SHELL. SPRINKLE 1 CUP OF THE MOZZARELLA CHEESE OVER MEAT. LAYER REMAINING MEATAND PARMESEAN CHEESE. BAKE ON COOKIE SHET 15 MINUTES. SPRINKLE TOP WITH REMAINING MOZZARELLA CHEESE. RETURN TO OVEN UNTIL CHEESE MELTS AND IS BROWN. SERVES 6