Drop a solid block of generic lard onto roughly chopped unpeeled sweet potatoes, together with 2 simple additions, into slow cooker for a hearty supper that's my default when I don't know what to make

This slow cooker 4-ingredient supper is straight out of the Depression-era playbook: simple, filling, and built from what you have on hand. You literally drop a solid block of generic lard onto roughly chopped, unpeeled sweet potatoes, add just two pantry staples—salt and onion—for a dish that’s surprisingly comforting. It’s the kind of thing a thrifty Midwestern mom might have thrown together when money was tight but she still wanted something warm and celebratory on the table for Mother’s Day. The fat renders slowly, basting the potatoes and onion, giving you a hearty, no-fuss base you can eat as-is or dress up with whatever else you have around.

Serve these lard-basted sweet potatoes and onions straight from the slow cooker with a bright, crunchy side—like a simple green salad with vinegar-forward dressing—to balance the richness. They’re also great spooned into bowls and topped with a fried or poached egg, or served alongside pan-seared sausages or leftover roast chicken. A quick slaw, pickles, or even sliced raw apples on the side add welcome acidity and freshness.

Servings: 4

2 1/2 pounds sweet potatoes, unpeeled, scrubbed and roughly chopped into 1- to 2-inch chunks

Scrub the sweet potatoes well under cool running water, removing any obvious dirt or rough spots with a brush or the edge of a knife. Leave the skins on for both flavor and a Depression-era level of thrift.

Roughly chop the unpeeled sweet potatoes into 1- to 2-inch chunks. Precision isn’t important here—just aim for pieces that are roughly the same size so they cook at a similar rate.

Peel and roughly chop the onion. Again, keep it rustic; you want visible pieces that will soften and melt into the potatoes as they cook.

Place the chopped sweet potatoes into the slow cooker crock in an even layer, then scatter the chopped onion over the top.

Sprinkle the salt evenly over the vegetables. This early seasoning helps draw out moisture and flavor as everything slowly cooks together.

Unwrap the solid block of generic lard and place it directly on top of the sweet potatoes and onions in the center of the slow cooker. The block should be whole—don’t chop or melt it first; you want it to slowly render and baste the vegetables.

Cover the slow cooker with the lid. Cook on LOW for 6 to 7 hours, or on HIGH for 3 to 4 hours, until the sweet potatoes are very tender when pierced with a fork and the lard has fully melted and pooled at the bottom.

Once cooked, use a large spoon to gently toss the sweet potatoes and onions in the rendered lard so everything is evenly coated. Taste and add a pinch more salt if needed.

Serve hot, spooning some of the flavorful fat over each portion. If desired, you can let the dish sit uncovered for 5 to 10 minutes so the top cools slightly and the lard clings more tightly to the potatoes instead of pooling.

To keep the spirit of the recipe true to its Depression-era roots, think in terms of stretching what you have rather than adding lots of extras. You can swap the yellow onion for any onion you have (white, red, or even a few shallots), or use coarse sea salt instead of kosher. If you want a bit more savoriness without changing the ingredient count, use a slightly larger onion or an extra pinch of salt at the end. For a smoky note that still fits the era, you could replace a few tablespoons of the lard with bacon drippings (if you already have them saved in a jar), but keep the total fat amount around 8 ounces so the dish doesn’t become greasy. Food safety tips: Handle the lard with clean, dry hands or utensils, and keep it refrigerated until you’re ready to add it to the slow cooker. If your sweet potatoes have any soft, moldy, or blackened spots, trim those away generously or discard the affected potato. Make sure your slow cooker heats properly—on HIGH it should bring the contents above 140°F within about 2 hours; if your cooker runs cooler, use the HIGH setting for at least part of the time. Once cooked, cool leftovers promptly and refrigerate within 2 hours; reheat thoroughly until steaming hot before eating. Because this dish contains a substantial amount of rendered fat, store it in a shallow container so it chills quickly and doesn’t sit at room temperature too long.