1 T. Dijon Mustard
1 tsp. Liquid Smoke (optional)
3 T. Dark Brown Sugar
1 ½ T. Garlic Powder
2 tsp. Salt
2 tsp. Sweet or Smoked Paprika
2 tsp. dry Mustard
1 tsp. Cumin
¼ tsp. Cayenne
4 lb. Baby Back Ribs, trimmed of silverskin
1 lb. medium size Yukon Gold Potatoes, unpeeled, scrubbed and quartered
1 T. EVOO
1 tsp. Old Bay
¾ C. BBQ Sauce, plus extra for serving

Preheat oven to 325 with one rack about 4 inches from broiler and another rack in center position. Place dijon in small bowl, add liquid smoke; stir to combine. In another small bowl, whisk together sugar, garlic powder, salt paprika, dry mustard, cumin, and cayenne. Brush both sides of the ribs with the Dijon, and sprinkle with the spice mixture to coat. Pat spices into the meat so it sticks. Wrap tightly in foil and place them in the center of a sheet pan. Combine potatoes, oil, and old bay in a bowl and toss to coat. Place potatoes around the packet of ribs. Bake for 90 minutes, gently flipping the package and stirring the potatoes halfway through cooking. Carefully transfer the package of ribs to a platter or another sheet pan and remove foil. Return ribs, without foil, to the center of the pan in a single layer, meaty side up. Brush them with BBQ sauce. Bake until knife slides easily into the thickest part of the meat, an additional 30 minutes. Keep an eye on the potatoes. If they are getting too dark, remove to a serving bowl and cover with foil to keep warm. When ribs are knife tender, remove potatoes to a bowl and cover with foil. Turn oven to broil and broil the ribs on the top rack until slightly charred in spots, about 3 minutes. Allow ribs to rest for 10 minutes before slicing between the bones. Serve with potatoes and extra BBQ sauce.