Crockpot Cheddar Bay Pork Tenderloin and Potatoes Step-by-step instructions

Before you start

Before starting, pat the pork tenderloin dry with paper towels. Halve the baby potatoes so they cook evenly and fit snugly around the meat. Shred the cheddar from a block if possible, and measure out the garlic butter.

If the butter is not already melted, melt it in a small saucepan or microwave-safe bowl. Have a 6-quart slow cooker ready. No other prep is needed, and the slow cooker does the rest.

Instructions

Layer and Season

1. 1Layer the pork and potatoes
   Place the pork tenderloin in the slow cooker insert. Nestle the halved baby potatoes around the pork, tucking them into any gaps so they sit in a single layer as much as possible.
   Look for The pork is centered, potatoes fill the sides.
   Tip If the tenderloin is very long, tuck the thin end under to fit evenly.
2. 2Scatter the cheddar
   Scatter the shredded cheddar evenly over the pork and potatoes, covering the surface completely.
   Look for The cheese forms an even blanket over the meat and potatoes.
   Tip Use freshly shredded cheddar for the smoothest melt.
3. 3Pour over the garlic butter
   Pour the melted garlic parsley butter evenly over the cheese layer, letting it seep down through the cheddar and around the potatoes.
   Look for The butter pools slightly on top of the cheese.
   Tip Drizzle slowly so the butter distributes rather than flooding one spot.

At the end of this phase, the slow cooker contains the pork tenderloin centered, with halved baby potatoes nestled around it.

The cheddar is scattered evenly over the top, and the garlic butter has been poured over, creating a shiny, buttery sheen. Nothing is cooked yet, but the ingredients are arranged so the heat will distribute evenly.

Slow Cook to Tender

4. 4Cook on low
   Cover the slow cooker and cook on low for 6 to 7 hours, until the pork is fork-tender and reaches 145°F (63°C) in the thickest part and the potatoes are soft enough to pierce easily. Let it rest for 3 minutes before slicing.
   Look for The cheese is melted into a golden sauce, and the pork is opaque with no pink.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Avoid opening the lid during cooking to keep the heat steady.
5. 5Rest the pork
   Turn off the slow cooker. Remove the pork to a cutting board and let it rest for at least 3 minutes before slicing. The potatoes can stay in the slow cooker, covered, to keep warm.
   Look for The pork rests, the cheese sauce stays warm in the pot.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Resting lets the juices redistribute, keeping the meat moist.

After 6 to 7 hours on low, the pork is fork-tender and reads 145°F (63°C). The potatoes are soft, and the cheddar has melted into a smooth, golden sauce that coats the meat and potatoes. The aroma is rich and garlicky. The sauce should be glossy, not separated, and there should be no pink in the pork.

Slice and Finish

6. 6Slice and serve
   Slice the pork tenderloin into 1/2-inch medallions. Serve the slices over or beside the potatoes, spooning the melted cheese sauce from the slow cooker over everything.
   Look for Slices are pale golden, no pink, with a soft, juicy center.
   Tip Use a sharp knife for clean slices without shredding the meat.

The pork rests for at least 3 minutes, then slices into clean medallions with no pink. The potatoes are tender and coated in the cheese sauce. When served, the sauce is spooned over the top, and the dish looks like a comforting, homey platter with a golden sheen.

Common mistakes

The most common mistake is opening the slow cooker lid too often, which lets heat escape and extends cooking time. Another is using pre-shredded cheese, which often contains anti-caking agents that prevent smooth melting.

Overcooking the pork can make it dry, so rely on a thermometer rather than guessing. Finally, do not skip the resting step—slicing too soon lets the juices run out, leaving the meat dry.

How to tell it’s done

The pork is done when an instant-read thermometer inserted into the thickest part reads at least 145°F (63°C). The meat should be opaque white with no pink in the center, and it should shred or slice easily with a fork.

The potatoes are done when a knife slides through them with little resistance. The cheese sauce should be smooth and golden, with no loose shreds remaining. Let the pork rest for at least 3 minutes before slicing to keep it juicy.

• Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest