Tunnel of Fudge is a cake that Betty Draper might make, if Mad Men continues (fingers crossed) for a few more seasons. This unusual cake -- yes, there really is a tunnel of fudge running through its center -- was the creation of Ella Rita Helfrich who won second prize in the 1966 Pillsbury Bake-Off. (For her efforts, she received $5,000; the first place winner took home $25,000 for a bread made with cheese spread and onion soup mix.) For a second place winner 44 years ago, this cake has…
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