Add the mustard, vinegar, brown sugar, hot sauce, Worcestershire, vanilla and pepper to a small pot and bring to a simmer while constantly whisking. Simmer lightly until the sugar is dissolved, about 5 minutes.
This cake is so rich and creamy that Raiza Costa wants to plaster the world with it.
Count down through our top 50 most-saved recipes, like Tyler's Chicken Parmesan.
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