Get ready for the heartiest and richest pot roast you’ve ever made. The addition of Guinness to this traditional recipe makes for the perfect St. Patty’s Day dish—but it’s also just as delicious served on a cold winter day. Guinness’s dark, rich flavor adds great depth, but it also keeps everything super tender. Feel free to substitute your favorite stout beer instead.

Meghan Rodgers
Meghan Rodgers

See 10 other recipes you need to make with beer this St. Patrick’s Day. 

Crock Pot Guinness Pot Roast

Serves 4. Double recipe to feed 8.


  • 1 tbsp olive oil
  • ~2.5 pounds boneless roast
  • 2 tsp salt, divided
  • 2 tsp black pepper, divided
  • 1/2 yellow onion
  • 1-2 carrots, peeled and diced
  • 1/2 pound mushrooms, sliced
  • 1 pound red potatoes, scrubbed and halved
  • 2 garlic cloves, minced
  • 1 tbsp fresh rosemary
  • 2 tbsp tomato paste
  • 1 tbsp Worcestershire sauce
  • 1 cup Guinness
  • 1 cup beef stock


  1. In a large pan, heat the oil. Season roast with 1 tsp each of salt and pepper. Sear roast on all sides until browned and slightly crispy. Remove from heat.
  2. Fill crock pot bowl with onion, carrots, mushrooms, potatoes, garlic, rosemary, ketchup, Worcestershire sauce, Guinness, beef stock, and remaining salt and pepper. Stir to mix liquids. Place browned roast in crock pot and cover with lid.
  3. Set crock pot to low and cook for 6 to 8 hours, or high and cook 3 to 4 hours, or until meat is tender and falling apart.
  4. Enjoy this hearty meal with a glass of Guinness this St. Patrick’s Day!

Also see, 5 Irish foods you’re basically required to eat on St. Patrick’s Day.


Also see, Make the original Irish coffee.

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Meghan is a full-time writer exploring the fun facts behind food. She lives a healthy lifestyle but lives for breakfast, dessert and anything with marinara. She’s thrown away just as many meals as she’s proud of.