Slow Cooker Shepherd’s Pie
by Sommer Collier — last updated on Feb 17, 2025 
My rich and savory slow cooker shepherd’s pie offers all of the comfort and flavors of the classic dish, but simmers all day in the crock pot to make a rustic all-in-one meal with little effort.
Lt. Dan and I have a standing lunch date on Saint Patrick’s Day at a local Irish Pub… We’ve held this tradition for over 20 years, and it’s one I look forward to all year. We nibble on corned beef and cabbage and laugh about Saint Paddy’s Day memories from the past. Then we come home and enjoy a hearty Irish-inspired dinner with the whole family. Usually St. Patrick’s Day is when I break out my cottage pie recipe. However, I know that traditional shepherd’s pie with layers of meat, veggies, mashed potatoes and cheese can feel a bit daunting to make. So today I’m sharing with you my slow cooker version of shepherd’s pie, which makes the process much easier without sacrificing any flavor!
Agnes – ⭐️⭐️⭐️⭐️⭐️ Shepherds Pie is one of my all time favorite comfort foods. I had no idea it could be made in a crock pot! The paper towel tip to avoid runny mashed potatoes is so good too – thank you!
Table of Contents
Sommer’s Recipe Highlights
Less Prep, More Downtime – My secret to make a truly easy shepherd’s pie recipe is that I use pre-made mashed potatoes. Usually, I reserve some mashed potatoes from a meal earlier in the week, or you can simply use quality store-bought mashed potatoes. Then I spend only about 20 minutes on hands-on prep, and let the slow cooker handle the “hard work.” Slow cooker meals like this and my crockpot chicken pot pie with biscuits make busy days feel more manageable.
Rich Irish Flavor – A little stout beer gives the filling a deep, hearty flavor. Guinness fits the Irish theme nicely! The alcohol does cook off in the shepherd’s pie, but if you’d prefer not to use any alcohol you can simply substitute with more beef broth… The dish won’t have quite the same flavor, of course, but there will still be enough Irish-style elements to make this recipe St. Patrick’s Day-worthy.
Lamb or Beef – Traditionally, shepherd’s pie is made with lamb or mutton, while the same style of dish made with beef is called cottage pie. But really, you can use your choice of meat and call this whatever you want.
Key Ingredients and Tips
- Meat – Lamb is traditional in shepherds pie. Yet you definitely can use beef. I recommend using chunks of beef rather than ground beef if you do choose to swap. I prefer lamb roast chunks because they become tender during the long cooking time and give the filling a better texture.
- Stout beer – I love adding stout beer because it adds a deeper, richer flavor to the filling without making the dish taste like beer.
- Tomato paste and Worcestershire sauce – Tomato paste adds richness, while Worcestershire sauce gives the filling a savory kick.
- Cornstarch – I use cornstarch to thicken the liquid in the filling and keep it from turning soupy.
- Whole-grain mustard, beef base, and thyme – Mustard adds tang to balance the filling, the beef base deepens the savory flavor, and dried thyme brings an earthy note.
- Mashed potatoes – Your choice of store-bought or made from scratch. Homemade mashed potatoes are usually thicker than store-bought potatoes. If using pre-packaged mashed potatoes, you may want to press the top firmly with paper towels to absorb as much extra moisture as possible, before spreading them on top of the meat mixture.
- Sharp cheddar or Dubliner cheese – I sprinkle shredded sharp cheddar or Dubliner over the mashed potatoes and replace the lid just long enough for it to melt. Dubliner is my favorite when I want to keep the Irish theme going.
How to Make
Find the full ingredient proportions, detailed instructions, storage tips, and a video tutorial in the printable form at the bottom of the post.
Prep – Before I start cooking, I cut the lamb or beef into small, bite-sized pieces, chop the onion and carrots, and mince the garlic. I keep the meat pieces around the same size so they cook evenly. Next, I set out my 6-quart slow cooker and arrange the remaining ingredients on the counter
Cook the Meat and Onion – I place the meat in a large skillet over medium heat and brown it on all sides. I make sure to give the pieces enough room to sit in a single layer and work in batches if needed. I let the meat develop some color before I turn the pieces in my skillet. Don’t try to cook it all the way through, however, as the meat will continue to cook in the slow cooker! Once the lamb is browned, I push it to the side of the skillet and add the chopped onion. I cook the onion for 5–6 minutes, until it softens and looks translucent.
Fill the Slow Cooker – I transfer the lamb and onion to my 6-quart slow cooker. Then I add the garlic, carrots, frozen peas, frozen corn, stout beer, tomato paste, Worcestershire sauce, cornstarch, whole-grain mustard, beef base, and dried thyme. Lastly, I season with 1 teaspoon salt and ¼ teaspoon black pepper and stir well to distribute everything. The mashed potatoes and cheese stay out for now.
Add the Potato Topping – Next, I wipe away any splashes from the inside walls of the crock with a dry paper towel. Now it’s topping time! I use thick mashed potatoes that hold their shape on a spoon rather than run off it. But if they’ve been in the fridge and are super firm, I take the potatoes out of the fridge and let them set for a few minutes until they are stir-able. I spoon them over the filling in big globs…
Then use a silicone spatula to gently spread them into a smooth, even layer that reaches the edges of the crock. But avoid pressing down, so the mashed potatoes stay on top instead of sinking into the meat mixture!
Slow Cook – Before placing on the slow cooker lid, I lay a long piece of paper towel across the opening of the crock. This step is a must to keep any excess moisture from building up and dripping onto the potato topping!
Now I put the lid in place over the shepherd’s pie, and set the slow cooker to cook on HIGH for 4-5 hours or LOW for 8-10 hours.
Add Cheese – A few minutes before I’m ready to serve, I remove the lid and sprinkle some shredded cheese across the potatoes. Pop that lid back on for a quick minute until the cheese melts. I like to add a sprinkle of fresh chopped parsley on top as a final step.
Serving Suggestions
As you can probably imagine, with a dish like this loaded with meat, vegetables, and mashed potatoes, I tend to serve this shepherd’s pie on its own. If I want something alongside it, I keep things simple with:
- A crisp green salad
- A slice of Irish soda bread
I sometimes enjoy a glass of Guinness with it, too. (By sometimes I mean 99% of the time.)
Storage Notes
Especially on St. Patrick’s Day, it is rare that I have any leftover slow cooker shepherd’s pie. However, on the occasion that I do, I store what remains of my shepherd’s pie in an airtight container and refrigerate for 3-4 days.
I also freeze individual portions in freezer-safe containers for up to 2 months. Then I just thaw the portions in the fridge overnight!
I’ve found the best way to reheat portions is in the oven, so the potatoes get a nice little crispness. I put a portion in an oven-safe dish, cover it, and heat it at 350°F until it reaches 165°F throughout. This usually takes about 10 minutes.
When I’m in a hurry, I microwave the leftovers in a microwave-safe dish with a lid. I cook them in 20 second bursts at 50% power, check for heat, and repeat until they’re reheated throughout.
Frequently Asked Questions
Something to know about slow cookers is that they hold in moisture. Excess liquid can make the filling thin or runny. I use just the measured ⅓ cup of stout in the recipe and skip any extra liquid. The finished filling resembles a rich gravy rather than a soup. To thicken it up a bit you can try cooking the shepherd’s pie in the slow cooker on HIGH with the lid off. Let it cook for 10-20 minutes, depending on how much excess moisture is in there.
No. I leave the layers undisturbed during the cooking process. Stirring mixes the potato topping into the filling.
Nope… This slow cooker version has a soft mashed potato topping and melted cheese rather than the crisp, browned crust of an oven-baked pie.
Looking for More Irish-Inspired Recipes
- Beef Cottage Pie
- Irish Cheese Toasties
- Baked Corned Beef and Cabbage
- Dubliners Fondue
- Irish Boxties
- Sweet Irish Soda Bread
- Irish Potato Pie
- Irish Beer Cheese Soup
- Irish Coffee Cheesecake – Buttercream Blondie
Check the printable recipe card below for the prep time and nutrition information including calories, carbohydrates, protein, and calcium. Make sure to share this recipe on Facebook, Pinterest, and Instagram.
Slow Cooker Shepherd’s Pie Recipe
Ingredients
- 1 1/2 – 2 pounds lamb roast or "beef stew meat"
- 1 large onion peeled and chopped
- 3 cloves garlic peeled and minced
- 3 large carrots peeled and chopped
- 1 cup frozen peas
- 1 cup frozen corn
- 1/3 cup stout beer
- 3 tablespoon tomato paste
- 2 tablespoons Worcestershire sauce
- 1 tablespoon corn starch
- 2 teaspoons whole grain mustard
- 1 teaspoon beef base
- 1 teaspoon dried thyme
- 5 cups thick mashed potatoes homemade or store-bought
- 1 cup shredded sharp cheddar or Dubliner cheese
Instructions
- Cut the lamb into small bite-size pieces. Place the meat in an oven-safe non-stick skillet (or cast iron skillet) and set over medium heat. Brown the lamb on all sides. Then push to the side of the pan and add the onions. Soften for 5-6 minutes.
- Pour the lamb, onions, and all remaining ingredients, excluding the mashed potatoes and cheese, into a 6-quart slow cooker. Season with 1 teaspoon salt and 1/4 teaspoon pepper, and stir well. Wipe down the sides of the slow cooker with a dry paper towel. Then spread the mashed potatoes over the top of the beef mixture all the way to the edges of the crock to seal in the ingredients below.
- Place a long piece of paper towel over the slow cooker to absorb the steam, and cover with the lid. Turn on high for 4-5 hours, or low for 8-10 hours.
- When ready to serve, sprinkle the cheese over the top of the potatoes and place the lid back on for 5 minutes to melt the cheese. Serve hot and garnish with extra herbs if you have them.
Notes
- Preheat the oven to 375 degrees F. Set a large 12-14 inch deep-dish cast iron skillet over medium heat. Brown the lamb and onions (as described in the instructions above.)
- Then add all remaining ingredients, except the mashed potatoes and cheese. Stir well and turn off the heat.
- Cover with a heavy lid (or with tight foil) and bake for 90 minutes.
- Spread the mahed potatoes over the top. Bake, uncovered, another 20 minutes. Then sprinkle the cheese over the top and bake for 3-5 more minutes.
This was perfect for my family, we all loved it and my kids even asked when we could have it again.
This is comfort food at its finest. I don’t usually add corn but added it this time and really liked that addition.