Crockpot Bourbon Portobello Tenderloin Tips: Dump and Forget Step-by-step instructions

Before you start

Before starting, cut the beef tenderloin into 1-inch pieces if not already done. Slice the portobello mushrooms thickly, about 1/2-inch thick. Peel the shallots and halve them lengthwise.

Measure the gravy and cut the butter into four pats. Have the slow cooker ready and plugged in. No other advance prep is needed—this is truly a dump-and-go meal.

Instructions

Layer and Pour

1. 1Layer the Ingredients
   Place the beef tenderloin tips in the bottom of a 6- to 7-quart slow cooker in an even layer. Scatter the sliced portobello mushrooms over the beef, then add the peeled shallots, tucking them between the mushrooms and beef.
   Look for The beef should be mostly covered by the mushrooms and shallots.
   Tip No need to brown the beef first—slow cooking will create deep flavor and tender texture.
2. 2Pour the Gravy and Add Butter
   Pour the mushroom-bourbon gravy evenly over the beef and vegetables. Dot the top with the salted butter pats, distributing them across the surface.
   Look for The gravy should cover most of the ingredients, with butter melting on top.
   Tip The butter adds richness and helps create a glossy sauce as it melts.

At the end of this phase, the slow cooker insert holds a neat layer of beef topped with mushrooms and shallots. The gravy is poured over, and butter pats sit on top. The colors are rich: dark beef, brown mushrooms, pale shallots, and deep gravy. Everything is ready to cook.

Slow Simmer

3. 3Slow Cook Until Tender
   Cover the slow cooker and cook on low for 4 to 6 hours, or on high for 2 to 3 hours, until the beef is fork-tender and the mushrooms are soft. The sauce will be bubbling gently around the edges. Let it rest for 3 minutes before slicing.
   Look for The beef should shred easily with a fork and the gravy should be thickened and fragrant.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Check at the lower end of the time range; tenderloin can become dry if overcooked.

After a few hours, the slow cooker is bubbling gently around the edges. The aroma is deeply savory with a hint of bourbon.

The beef is visibly tender, the mushrooms are soft, and the gravy has darkened and thickened. The butter has melted into the sauce, creating a glossy sheen.

Rest and Serve

4. 4Rest and Serve
   Turn off the slow cooker and let the beef rest in the sauce for at least 3 minutes before serving. Serve the beef, mushrooms, and shallots over fluffy white rice, spooning extra gravy over the top.
   Look for The beef is fork-tender and the gravy is thick enough to coat a spoon.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Letting the beef rest in the sauce keeps it moist and allows the flavors to meld.

The beef rests in the hot gravy for at least 3 minutes, allowing the juices to redistribute. When served over rice, the beef is fork-tender, the mushrooms are silky, and the shallots are sweet. The gravy coats each bite with rich, bourbon-infused flavor.

Common mistakes

One common mistake is using too little gravy—the meat should be mostly submerged to stay moist. Another is overcooking on high, which can make the beef tough. Stick to the recommended times and check early.

Also, avoid lifting the lid while cooking, as that releases steam and slows cooking. If the sauce is too thin at the end, remove the lid and cook on high for 15 minutes to reduce.

How to tell it’s done

The beef is done when it is fork-tender and reaches an internal temperature of at least 145°F (63°C). The mushrooms should be soft and have absorbed the gravy, and the shallots should be translucent and sweet.

The gravy should be slightly thickened and glossy, coating the back of a spoon. If the beef is still chewy, continue cooking for another 30 minutes and check again.

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