ADD 1 TABLESPOON OLIVE OIL AND 1 TABLESPOON BUTTER TO A LARGE POT OR DUTCH OVEN. MELT OVER MEDIUM HEAT; ONCE MELTED, ADD SQUASH WITH A PINCH OF SALT AND PEPPER. SAUTÉ FOR 8-10 MINUTES. COVER AND CONTINUE COOKING FOR 10-15 MINUTES, OR UNTIL SQUASH IS FORK TENDER. REMOVE POT FROM HEAT TO ALLOW SQUASH TO COOL SLIGHTLY BEFORE MASHING.
RELATED POST:
CRACK POTATOES
PREHEAT OVEN TO 350°F. COAT AN 8×8-INCH BAKING DISH WITH COOKING SPRAY. SET ASIDE.
USE A POTATO MASHER TO MASH SQUASH. ADD GARLIC POWDER, SOUR CREAM, BUTTER, CHEDDAR CHEESE, BEATEN EGG, AND ¼ CUP PARMESAN CHEESE. CONTINUE TO MASH UNTIL ALL INGREDIENTS ARE WELL BLENDED.
POUR SQUASH MIXTURE INTO PREPARED BAKING DISH. COVER WITH CRACKER CRUMBS AND ¼ CUP PARMESAN CHEESE. DRIZZLE OVER 2 TABLESPOONS OF MELTED BUTTER. BAKE COVERED FOR 35 MINUTES, THEN REMOVE COVER AND FINISH BAKING 5-7 MINUTES, OR UNTIL TOP IS GOLDEN BROW