Lightly spray a 9-by-13-inch glass baking dish with nonstick cooking spray. Sprinkle gelatin over a small bowl filled with 1/2 cup cold water; let stand to soften.
In a heavy bottomed saucepan, mix together sugar, corn syrup, hot water, and salt. Place over medium heat and cook, stirring, until sugar has dissolved. Continue cooking, without stirring, until mixture reaches the soft-ball stage, about 240 degrees on a candy thermometer. Remove from heat and add gelatin mixture; set aside.
In the bowl of an electric mixer fitted with the whisk attachment, beat egg whites on high speed until stiff peaks form. With the mixer running, slowly add sugar mixture. Add vanilla and continue beating for 10 minutes until the mixture looks like marshmallow.
Transfer marshmallow mixture to prepared baking dish and spread evenly. Spray a piece of parchment paper with nonstick cooking spray and cover marshmallow. Let stand overnight.
Remove parchment paper and invert marshmallow onto work surface. Trim 1/4-inch from edges of marshmallow. Cut marshmallows into 1 1/2-inch squares. Pour cornstarch in a bowl; working in batches, gently add marshmallows and toss to coat.
Line a baking sheet with parchment paper; set aside. Working with 1 marshmallow at a time, insert skewer into a marshmallow and dip in fudge until coated on all sides, removing any excess from bottom of marshmallow; place on prepared baking sheet. Repeat process with remaining marshmallows (you will have some marshmallows left over). Let chocolate covered marshmallows stand at room temperature overnight before serving or transferring to an airtight container for up to 3 days.
About Us........ This blog is about the moments that fill our lives. Honestly, there never is a dull one! Mark and I have been married 36 years and have 5 great kids and 7 adorable grand-kids. We've gone from California to New York and plenty of places in between. We've lived in some great cities including Dallas, Chicago, Memphis and Jacksonville. We love where we've landed in Texas and enjoy living close by, to our two married daughters and their families and my parents who also live in the area. It is always such a treat when we get to see our son, daughter-in law and their cute little boys who reside in Florida. Our younger son, is stationed at Ft. Riley for Advance Infanty Training with the US Army. He is currently deployed in Kuwait. We love his new bride and look forward to every minute we get to spend with her. Our youngest daughter was married in July 2015. She and her husband are living in Provo, Utah while attending BYU.