5-Ingredient Slow Cooker Vintage Mid-Summer Tenderloin

This 5-ingredient Slow Cooker Pork tenderloin is the kind of easy dinner that feels like a little win on a busy weekday. Simple pantry ingredients, hardly any prep, and a tender, sliceable roast that tastes like you worked much harder than you did.

Why You’ll Love It

• Only 5 ingredients — all pantry staples you probably already have on hand
• Hands-off cooking — set it on low and forget it for four to five hours while you get on with your day
• The gravy makes itself — savory, creamy, and ready to spoon straight over noodles, rice, or mashed potatoes
• Easy cleanup — one Slow Cooker insert and a single mixing bowl
• Great leftovers — the sliced pork makes excellent sandwiches the next day

Ingredient Notes

The pork tenderloin: I want to flag that this is a tenderloin, not a loin roast. They look similar in the store and I have grabbed the wrong one before. The tenderloin is the smaller, narrower cut — usually around a pound and a half to two pounds. It cooks much faster and goes dry if you overdo it, so don’t swap them.

The dry onion soup mix: I use whatever brand is on the shelf. There’s nothing special about any of them. I’ve heard people say they want to make their own from scratch and I respect that impulse, I do, but for this particular recipe I just don’t bother. The packet is fine.

Cream of mushroom soup: I’ve tried making this with cream of Chicken too, and it works, though it tastes a little different. A little more mild. Either way is fine. I’ve also done a combination of both when I only had one can of each, and it turned out good.

The Worcestershire sauce: Just a tablespoon but don’t leave it out. It adds something — depth, maybe, or a little edge — that I notice when it’s missing.

Ingredients

• 1 whole pork tenderloin, about 1½ to 2 pounds (not the loin — the small one)
• 1 packet dry onion soup mix, roughly an ounce
• 1 can cream of mushroom soup, 10½ ounces
• ½ cup chicken broth
• 1 tablespoon Worcestershire sauce

Instructions

I spray the inside of the slow cooker with a little cooking spray first, just because cleaning it out later without that step is a thing I’ve done exactly once and don’t intend to do again. Then I lay the tenderloin right in the bottom. Don’t cut it up, don’t brown it first — just put it in.

In a bowl, stir together the soup mix, the cream of mushroom soup, the broth, and the Worcestershire until it’s more or less combined. It’s not going to look like much. It’ll look like a fairly unpleasant beige sauce and that’s okay. Pour it over the pork and make sure the top is coated — push it around a little with a spoon if you need to.

Put the lid on. Walk away. Cook it on low for four to five hours.

Here’s the thing about slow cookers: they are not all equal, and I say this as someone who has owned four of them over the years. My current one runs a little hot, or at least I think it does, so I start checking the pork closer to four hours. You want it tender and easy to slice, not falling apart into shreds. Pork tenderloin is lean and it will dry out if you leave it too long — I’ve done it, made it into something close to a chew toy, and it’s a sad outcome when the rest of the dish is so good.

When it’s done, pull the tenderloin out and let it sit on the cutting board for five minutes. This is not optional. I used to skip resting meat and then someone told me I was ruining my own food. They weren’t entirely wrong.

While it rests, whisk the sauce in the slow cooker a little. It might have separated some, but it comes back together. If you want it thicker, pour it into a small saucepan and let it simmer on the stove for five minutes or so. I don’t always bother. Sometimes I just serve it as-is and it’s perfectly fine.

Slice the pork into rounds, about half an inch thick, and spoon the gravy over everything.

Variations

If you want a richer sauce at the end — and some nights I really do — stir a few tablespoons of sour cream into the gravy after the pork comes out. Let it cool down a little first or it’ll curdle on you, which is more annoying than dangerous but still not what you were hoping for. It makes the gravy softer and a little tangier and it is especially good over egg noodles, which is probably my favorite way to serve this whole thing.

A squeeze of lemon over the finished dish before serving sounds strange but does something good to the flavor, particularly in summer when everything already feels heavy. A little brightness at the end helps balance the creamy sauce.

I’ve also added baby carrots under the pork before cooking, right on the bottom of the slow cooker so they cook in the juices. They get soft and sweet and a little savory and basically become the best thing on the plate by the time dinner’s ready.

Storage & Reheating

This keeps well in the fridge for three or four days, in a container with the gravy over the top so the pork doesn’t dry out. I’ve left it in the slow cooker insert overnight more than once — I don’t think that’s recommended, technically — and it was always fine the next morning. I probably shouldn’t say that but there it is.

Reheat it covered in the microwave with a little splash of broth if the sauce looks thick. Or just eat it cold on a roll the next day, which sounds wrong but is actually excellent. Slice it thin, add the cold gravy, put it on toasted bread — it’s a really good lunch and I always look forward to it more than I expect to.

A Few Last Things

Egg noodles are probably the most natural pairing. Mashed potatoes too. But honestly last summer I started serving this with rice just because that’s what I had, and I haven’t stopped — there’s something about the way the gravy settles into rice that I find really satisfying. Less starchy, somehow. I don’t know if that makes sense.

If you’re feeding more than six people, don’t try to cram two tenderloins into one slow cooker. I’ve tried. The liquid doesn’t distribute evenly and the cook time gets unpredictable. Better to use two slow cookers side by side, which I realize is a ridiculous thing to have to say but I’ve been to enough summer dinners to know that someone will try it.

It’s a simple meal. The kind that doesn’t ask much of you. Sometimes that’s exactly right.