4. Cook Slowly
Cover the slow cooker and cook until the beef reaches your preferred level of doneness.
Because sirloin is a relatively lean cut, avoid assuming that a long cooking time will automatically make it more tender. Unlike tougher cuts such as chuck roast, sirloin can become dry if it is cooked well beyond its ideal temperature.
Use an instant-read thermometer to check the thickest part of the meat.
For a whole beef roast, the USDA recommends a minimum internal temperature of 145°F (63°C) followed by at least a three-minute rest.
5. Crisp the Bacon
One drawback of slow-cooking bacon is that it won't become particularly crisp in a moist environment.
For crispier bacon, carefully transfer the cooked roast to a baking sheet and place it under a broiler for a few minutes.
Watch it closely—the bacon can go from beautifully browned to burnt very quickly.
6. Rest Before Slicing
Transfer the roast to a cutting board and let it rest for several minutes before slicing.
Resting allows the juices to redistribute, helping the meat stay moist when you cut into it.
Slice against the grain into portions and spoon a little of the cooking liquid over the top.
How to Get the Best Results
Don't Overcook the Sirloin
This is perhaps the most important tip.
Sirloin doesn't have the same connective-tissue structure as a chuck roast, so it isn't necessarily improved by many hours of slow cooking. Use temperature rather than time as your primary guide.
Don't Drown the Bacon
Keep most of the bacon above the cooking liquid. This won't make it crispy, but it gives you a better surface for browning later.
Finish Under the Broiler
If you want that appealing golden-brown bacon exterior, a brief broiling step after slow cooking can make a major difference.
Slice Against the Grain
Look at the direction of the muscle fibers and cut perpendicular to them. This shortens the muscle fibers and can make each bite easier to chew.
Should You Sear the Beef First?
You can.
Searing the seasoned beef in a hot skillet before wrapping it in bacon can add a deeper browned flavor to the outside.
However, it isn't essential. If you're prioritizing convenience, you can place the seasoned, bacon-wrapped sirloin directly into the slow cooker.
If you do sear it, make sure the pan is hot enough to brown the surface quickly without cooking the center excessively.
Delicious Side Dishes
Bacon-wrapped sirloin pairs wonderfully with classic comfort-food sides.
Try serving it with:
- Creamy mashed potatoes
- Roasted baby potatoes
- Buttered egg noodles
- Green beans
- Roasted carrots
- Steamed broccoli
- Creamed spinach
- Corn
- Dinner rolls
- Simple garden salad
For a holiday-style dinner, add mashed potatoes, roasted vegetables, and gravy made from the flavorful cooking juices.
Easy Flavor Variations
Garlic Herb Sirloin
Add fresh minced garlic, rosemary, and parsley to the seasoning mixture for a more herb-forward flavor.
Maple Bacon Beef
For a slightly sweet and savory combination, brush a small amount of maple syrup over the bacon before the final browning step.
Spicy Bacon-Wrapped Sirloin
Add smoked paprika, crushed red pepper flakes, or a little cayenne to the seasoning.
Mushroom Sirloin
Add sliced mushrooms to the slow cooker around the beef. They'll absorb some of the savory cooking liquid as they soften.
Onion and Herb Version
Add sliced onions, thyme, and rosemary around the roast for a simple aromatic base.
Can You Make the Roast Ahead?
You can season and wrap the sirloin with bacon several hours ahead of cooking. Keep the prepared beef refrigerated until you're ready to cook it.
You can also prepare the cooking-liquid mixture ahead of time and refrigerate it separately.
Avoid leaving raw beef at room temperature while preparing other parts of the meal.
How to Store Leftovers
Transfer leftover beef to an airtight container and refrigerate it promptly.
Leftover slices are excellent in:
- Steak sandwiches
- Wraps
- Salads
- Steak and egg breakfasts
- Rice bowls
- Quesadillas
For reheating, use gentle heat to help prevent the lean beef from becoming dry.
Frequently Asked Questions
Can I use another cut of beef?
Yes, but the cooking method may need to change. Tender cuts such as sirloin shouldn't necessarily be treated like tough cuts that require many hours of cooking.
Can I make the bacon crispy in the slow cooker?
Not really. The moist environment prevents bacon from developing the same crispness it would get from dry heat. For crisp bacon, finish the roast briefly under a broiler or in a hot oven.
Do I have to sear the beef first?
No. Searing is optional. It adds browned flavor but isn't required for the recipe to work.
Can I add vegetables to the slow cooker?
Yes. Potatoes, carrots, onions, and mushrooms can all work well. Cut dense vegetables into appropriately sized pieces so they cook evenly.
Why did my sirloin turn out dry?
Sirloin is relatively lean and can become dry if it is cooked for too long. Check the internal temperature rather than relying only on the slow cooker's timing.
A Comforting Dinner Made Easy
Slow Cooker Bacon-Wrapped Sirloin is a delicious way to turn a simple beef roast into a dinner that feels impressive without requiring constant attention.
The combination of seasoned beef, smoky bacon, savory broth, and herbs creates a satisfying main course that pairs beautifully with mashed potatoes and roasted vegetables.
For the best results, keep an eye on the beef's internal temperature, give the bacon a quick finish under the broiler if you want it crisp, and let the roast rest before slicing.
It's an easy, comforting meal that's especially welcome when you're looking for something hearty, flavorful, and a little more special than an ordinary weeknight dinner.