1Heat oven to 325°F. Grease bottom and side of 9-inch springform pan or 9-inch square pan with shortening; lightly flour. In large bowl, beat all gingerbread ingredients except toffee bits with electric mixer on low speed 30 seconds, scraping bowl constantly. Beat on medium speed 3 minutes, scraping bowl occasionally. Stir in 1/2 cup toffee bits. Pour into pan.
2Bake about 50 minutes or until toothpick inserted in center comes out clean.
3Meanwhile, in medium bowl, mix egg whites and cream of tartar with electric mixer on high speed until foamy. Beat in brown sugar, 1 tablespoon at a time. Stir in 1/4 cup toffee bits.
4Increase oven temperature to 400°F. Spread meringue over hot gingerbread. Bake 8 to 10 minutes or until meringue is light brown. Serve warm.