Created by KittenCal on November 5, 2011
Step 1: Preheat oven to 350 degrees F, then set oven rack to second-lowest position.
Step 2: Grease and flour a 15 x 10-inch jellyroll pan.
Step 3: Whisk together melted butter and next 6 ingredients together in a large bowl until smooth and well combined.
Step 4: Stir in flour until smooth and combined, then mix in chopped pecans.
Step 5: Pour batter into sheet pan.
Step 6: Bake for 20 to 25 minutes or until a wooden pick inserted in center comes out clean.
Step 7: Meanwhile prepare the glaze by mixing all ingredients together until smooth and combined (the glaze must be drizzled onto the warm cake).
Step 8: Remove cake from oven then top warm cake evenly with marshmallows.
Step 9: Return to oven and bake 5 minutes.
Step 10: Drizzle Chocolate Frosting over warm cake.
Step 11: Cool completely.