In mixer fitted with whisk attachment, beat egg whites on medium speed about 1 minute or until foamy. Add cream of tartar; beat 2 to 3 minutes or until soft peaks form. Reduce speed to low; beat in 2 tablespoons Truvía™ Baking Blend. Increase speed to high, and beat until glossy, stiff peaks form, 3 to 5 minutes. Sprinkle with flour mixture, and carefully fold in until combined, being careful not to deflate egg whites.