Sweet Potato Pecan casserole

2 POUNDS SWEET POTATOES
1/4 TSP. SALT
1/4C. BROWN SUGAR
2T. BUTTER
1/4C. HEAVY CREAM
3 YOLKS
3 WHITES
TOPPING:
HANDFUL OF PECANS-MORE OR LESS DEPENDING ON YOUR TASTE-CHOPPED FINE
2T. BROWN SUGAR
2T. MELTED BUTTER

PREHEAT OVEN 400. BOIL POTATOES UNTIL TENDER. DRAIN, PEEL AND MASH THEM. ADD SALT, SUGAR, BUTTER, CREAM AND YOLKS. BEAT THE 3 EGG WHITES UNTIL STIFF AND FOLD THEM IN. SPREAD IN A SOUFFLE DISH. FOR THE TOPPING, COMBINE THE MELTED BUTTER, PECANS AND SUGAR AND SPREAD ON TOP! BAKE 30-35 MINUTES!