Crockpot Sour Cream French Onion Pork Medallions

This slow cooker recipe turns a few simple ingredients into a rich, comforting dinner. Pork tenderloin medallions cook low and slow with sweet onions, broth, sour cream, and savory pan gravy until they are melt-in-your-mouth tender.

The sauce becomes silky and full of flavor, perfect for spooning over buttered egg noodles. Just dump everything in the Crockpot and let it work its magic.

The beauty of this dish is its simplicity. You layer raw pork medallions with sliced onions, thyme, and broth, then top with sour cream and gravy.

After hours of gentle simmering, the pork becomes incredibly tender and the onions melt into a sweet, jammy base. The sour cream and gravy create a luscious sauce that coats every bite. It is a set-and-forget meal that delivers big flavor with minimal effort.

Ingredients

Why this recipe works

Slow cooking is ideal for pork tenderloin medallions because the low, steady heat breaks down the meat's fibers, making it fork-tender without drying out.

The long cook time also allows the onions to caramelize slowly, releasing their natural sugars and adding depth to the sauce. The broth and gravy keep everything moist and create a rich, savory liquid that becomes the sauce.

The layering technique is key: the pork sits on the bottom, so it cooks directly in the broth and stays juicy. The sour cream and gravy are added on top, and as they melt, they blend with the onion juices to form a creamy, cohesive sauce.

Because you do not stir, the layers meld gently during cooking, resulting in a harmonious dish with distinct textures and flavors.

Notes and substitutions

Pork tenderloin is a lean cut, so it benefits from slow, moist cooking. Cutting it into medallions ensures even cooking and makes serving easy. Vidalia onions are sweet and mild, but any sweet onion works. Fresh thyme adds an earthy, aromatic note; if using dried thyme, use about 1 teaspoon.

The savory pan gravy can be homemade or store-bought; it adds a meaty flavor that complements the pork. For a richer sauce, use a good-quality beef broth. Sour cream adds tang and creaminess; full-fat sour cream works best. If you prefer a lighter sauce, you can use Greek yogurt, but it may separate slightly.

• Vidalia onions: Any sweet onion, such as Walla Walla or Maui, or yellow onions for a sharper flavor.
• beef broth: Chicken broth or vegetable broth for a lighter sauce.
• savory pan gravy: Store-bought beef gravy or a homemade gravy made from pan drippings.
• egg noodles: Mashed potatoes, rice, or crusty bread for soaking up the sauce.

Equipment

• 6-quart slow cooker
• Cutting board
• Chef's knife
• Measuring cups
• Wooden spoon
• Serving spoon
• Serving plate