Sprinkle tenderloins with salt and pepper. Cut each apple into quarters. Peel and core. Blend flour with cumin. Dredge tenderloins in flour mixture. Heat oil over medium-high heat in heavy skillet. Add tenderloins. Cook, turning the pieces so they brown evenly on all sides, about 5 minutes.
Pour off fat from pan. Add apples and onions around meat. Cook and stir about 3 minutes. Add vinegar, chicken broth, honey, and tomato paste. Bring to a simmer, stirring. Cover tightly. Cook about 15 minutes. Add grapes. Cook 5 minutes longer.
Slice pork on the bias. Serve with apples and grapes and some sauce over each serving
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