Apple butter in the slow cooker is mostly a dump-and-go project, but getting it thick requires a final uncovered reduction so moisture can evaporate. Cook the apples until they collapse, purée smooth, then crack the lid and reduce to a glossy, spreadable apple-butter consistency.
1.4kgapplesGala, Golden Delicious, Jonagold, Honeycrisp, or a mix; unpeeled, cored, and chopped (about 6–7 medium)
110gpacked light brown sugar
2tspground cinnamon
1/4tspfine salt
15mlapple cider vinegaroptional
1/8tspground allspiceoptional
1pinchground clovesoptional (about 1/16 tsp)
Instructions
Prep the apples: Wash well, then core and chop into roughly 1-inch (2.5 cm) pieces. Do not peel.
Load the slow cooker: Add apples, brown sugar, cinnamon, and salt to a 5–6 quart slow cooker. Add the vinegar and any optional spices, if using, and toss to coat.
Cook until totally soft: Cover and cook on HIGH for 4 to 5 hours, stirring once or twice if you can, until the apples are collapsing and there is bubbling liquid around the edges. If your slow cooker runs hot, start checking at about 3 1/2 hours.
Purée until silky: Blend smooth with an immersion blender (1 to 3 minutes). If using a countertop blender, blend in batches and vent the lid to let steam escape.
Reduce to apple-butter thickness: Return the slow cooker to HIGH. Cook uncovered or with the lid propped ajar for 30 to 90 minutes, stirring every 10–15 minutes, until spreadable (a spoon trail stays open briefly before slowly filling in). Remember it thickens more as it cools.
Cool, then store: Let cool to warm room temperature, then transfer to jars or airtight containers and refrigerate.
Optional extra-smooth finish: For a perfectly uniform texture, push the apple butter through a fine-mesh sieve after blending.