The classic pairing of applesauce with pork is elevated with a zesty spice rub and apple-onion gravy that's so good, you'll want to just eat it straight up.
In a small bowl, combine lemon zest and spices. Take half of this spice mixture, move it into another bowl and add olive oil. Season pork with salt and pepper and rub with the oil spice mixture. Allow to rest for 45 minutes to one hour before roasting.
Heat oven to 375°. In a roasting pan or deep baking dish, toss apple and onion wedges with lemon juice and the remaining spice mixture. Add 1/2 cup water, and place pork roast on top. Roast until internal temperature reaches 145°. Remove roast to cutting board and tent with foil, allowing to rest for 5–10 minutes.
While pork is roasting, combine apple cider and maple syrup into a small to medium saucepan and cook over medium high heat, bringing to a boil. Allow to simmer for a few minutes to reduce slightly. Remove from heat and set aside.
Set aside a few apple and onion wedges for plating. In a mini-food processor or blender, blend the remaining roasted apples and onions along with the pan drippings until smooth. Add puree into the apple cider mixture and heat over medium-low heat to warm. Season with salt and pepper to taste.
Slice pork roast and serve with apple onion gravy on the side, garnished with the reserved apple and onion wedges.