This 5-ingredient slow cooker supper leans into that practical, old-fashioned dinner style that feels right at home for a National Radio Day nod, with the kind of simple prep a busy weekday really needs. It has the cozy spirit of a 1940s-style family meal: a savory protein, a rich sauce, and long, gentle cooking that lets dinner take care of itself while you get on with the day.
Serve this with mashed potatoes, buttered egg noodles, or plain white rice to soak up the glossy sauce. A side of green beans, glazed carrots, or simple corn makes it feel complete, and if you want to lean into the late-summer comfort theme, a chilled iced tea or lemonade fits right in.
5-Ingredient Slow Cooker 1940s National Radio Day Supper
Servings: 6
Ingredients
2 1/2 to 3 pounds unidentifiable roasted protein
1 packet dry onion soup mix, about 1 ounce
1 cup ketchup
1/2 cup brown sugar
2 tablespoons apple cider vinegar
Directions
1. Place the unidentifiable roasted protein in the slow cooker insert, positioning it in the center so the sauce can coat it evenly as it cooks.
2. In a medium bowl, stir together the dry onion soup mix, ketchup, brown sugar, and apple cider vinegar until smooth and well combined.
3. Pour the sauce over the protein, turning or spooning as needed so the surface is well coated.
4. Cover and cook on low for 4 to 6 hours, until the protein is very tender and the sauce is darkened, glossy, and bubbling around the edges.
5. Transfer to a serving platter or serve straight from the slow cooker, spooning extra sauce over the top. Pair with mashed potatoes, noodles, or rice and a simple vegetable side.
Variations & Tips
Make-ahead tip: Mix the sauce the night before and refrigerate it in a covered container. In the morning, place the protein in the slow cooker, pour over the sauce, and start cooking before work.
Sweeter sauce: For a more nostalgic, supper-club style flavor, add an extra tablespoon or two of brown sugar. This helps the sauce turn a little stickier and richer by dinnertime.
Tangier finish: If you like a little more balance, stir in an extra splash of apple cider vinegar at the end of cooking. It brightens the sauce without adding extra work.
Serving tip: If the sauce seems thin, leave the lid off for the last 20 to 30 minutes on high so it can reduce a bit. Spoon it over the sliced or shredded protein for the best flavor in every bite.