Dinner · Part 2 of 3: Instructions
Guinness Onion Garlic Butter Bottom Round Roast Step-by-step instructions

- Prep
- Cook
- Total
- Serves
- 6
Before you start
Before starting, peel the pearl onions if they are not already peeled; a quick blanch in boiling water makes the skins slip off easily.
Cut the cowboy butter into thick medallions if it is not already sliced. Have the Guinness bottle open and ready. No other prep is needed—the slow cooker does the rest.
Ingredients at a glance (5)
- 3 1/2 lb bottom round roast
- 1 lb pearl onions, peeled
- 1 bottle (14.9 oz) Guinness draught stout
- 4 oz cowboy garlic butter, cut into medallions
- 12 oz buttered egg noodles, for serving
Instructions
Layer and Pour
- Layer the Roast and AromaticsPlace the bottom round roast in the center of a 7-quart slow cooker. Scatter the peeled pearl onions around the roast, tucking some underneath for even cooking.Look for The roast sits snugly in the insert with onions filling the gaps.Tip If the roast is larger than the insert, trim it slightly so it fits flat.
- Pour in the StoutPour the Guinness draught stout over the roast and onions. The liquid should come about halfway up the roast; add a splash of water if needed.Look for The stout foams slightly and turns deep brown as it settles.Tip Use a full bottle for a rich malty flavor; avoid using extra liquid.
- Top with Cowboy ButterPlace the cowboy garlic butter medallions evenly across the top of the roast. They will melt and baste the meat as it cooks.Look for Butter sits in thick slices over the roast, ready to melt.Tip If the butter is very cold, let it sit at room temperature for 10 minutes first.
At the end of this phase, the raw roast sits in the center of the slow cooker, surrounded by pearl onions. The Guinness is poured over and foams slightly, creating a dark, glossy pool.
The cowboy butter medallions sit on top, looking like golden discs ready to melt. The scene is simple but promising—everything is in place for a long, slow transformation.
Slow-Cook and Rest
- Slow-Cook Low and LongCover the slow cooker and cook on low for 8 to 10 hours, until the roast is fork-tender and easily shreds. Do not lift the lid during the first 6 hours. Let it rest for 3 minutes before slicing.Look for The house fills with a rich, beefy, buttery aroma after a few hours.Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)Tip Low heat is essential for breaking down the connective tissue in bottom round.
- Check for TendernessAfter 8 hours, insert a fork into the thickest part of the roast. It should slide in with little resistance. If not, continue cooking and check every 30 minutes. Let it rest for 3 minutes before slicing.Look for The meat yields easily and begins to separate into strands.Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)Tip For shredding, cook until the internal temperature reaches at least 145°F (63°C) and the meat is tender.
- Rest the RoastTurn off the slow cooker and let the roast rest in the liquid for at least 3 minutes before shredding. This allows the juices to redistribute.Look for The bubbling subsides and the liquid settles.Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)Tip Resting keeps the meat moist and makes it easier to handle.
After 8 to 10 hours, the slow cooker is bubbling gently, and the aroma is rich and meaty with a hint of roasted malt. The butter has melted into the liquid, creating a glossy, deep-brown gravy. The roast is fork-tender, and the onions are soft and sweet. The meat has rested and is ready to shred.
Shred and Serve
- Shred the BeefUsing two forks, shred the roast directly in the slow cooker, mixing it with the onions and gravy. Remove any large pieces of fat if desired.Look for The beef pulls apart into long, tender strands.Tip Shred gently to keep some chunks for texture.
- Serve Over Buttered NoodlesSpoon the shredded beef, onions, and gravy over hot buttered egg noodles. Serve immediately.Look for The gravy coats the noodles and beef beautifully.Tip Warm the plates for a restaurant-style presentation.
The shredded beef is coated in a thick, savory gravy, with pearl onions nestled throughout. The buttered noodles are piled on plates, topped with the beef and a ladle of gravy. The dish looks hearty and comforting, with steam rising and the glossy sauce catching the light.
Common mistakes
A common mistake is lifting the lid to check on the roast, which releases heat and extends cooking time. Another is using a high setting, which can make the meat tough instead of tender.
Do not skip the rest after cooking; letting the meat sit in the hot liquid for a few minutes helps the juices redistribute. Finally, do not trim all the fat from the roast—it adds flavor and moisture.
How to tell it’s done
The roast is done when it is fork-tender: a fork inserted into the thickest part should slide in with little resistance, and the meat should easily pull apart into strands.
The internal temperature should reach at least 145°F (63°C) for food safety, but for shredding, it will likely be higher, around 190°F (88°C), which is perfect for breaking down collagen. The gravy should be thick enough to coat a spoon.
- Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest
Up next · Part 3 of 3
4 variations · storage & make-ahead · 5 answers · printable card
Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)