Guinness Potatoes Au Gratin

Looking for a fun (and unique!) side dish? Put this Guinness Potatoes Au Gratin recipe on the menu. It’s packed with flavor!

Guinness Potatoes au Gratin...that's right, potatoes, cheese, AND Guinness! Click for recipe from Spiced.

Last week I finally broke down and purchased a new mandoline.  I’ve had my eye on a larger one for a while, so I decided to treat myself.  Of course, I wanted to try it out immediately, and potatoes au gratin is an excellent recipe for a mandoline!  (I have definitely sliced potatoes by hand for this recipe before…and it takes a long, long time.)  Since St. Patrick’s Day is just around the corner, I figured this recipe needed an Irish twist.  The potatoes alone push this recipe into the Irish category, but I couldn’t resist adding a bit of Guinness, too!

Guinness Potatoes au Gratin...that's right, potatoes, cheese, AND Guinness! Click for recipe from Spiced.

I know you can buy boxed Potatoes Au Gratin at the market, but this is an incredibly easy recipe…and it tastes so much better homemade!  After all, this recipe is primarily just potatoes and cheese, and it’s pretty hard to make potatoes and cheese taste bad!  

The Guinness adds a nice malty undertone that balances well with the smoked cheese.  I know smoky flavors can sometimes overwhelm a dish, but the relatively small proportion of smoked cheese in this recipe adds the perfect amount of smoke flavor.  (If you aren’t a fan of smoky flavors, then just substitute in different cheeses.  Have fun with it!)

The bread crumbs in this dish provide a nice crispy top crust.  Instead of purchasing bread crumbs, feel free to crumble up a couple slices of old bread.  I actually used some two-day old Irish Soda Bread (raisins removed), and it worked beautifully!

Guinness Potatoes au Gratin...that's right, potatoes, cheese, AND Guinness! Click for recipe from Spiced.

Guinness Potatoes Au Gratin

Looking for a fun (and unique!) side dish? Put this Guinness Potatoes Au Gratin recipe on the menu. It's packed with flavor!
Print Pin Rate
Prep Time: 15 minutes
Cook Time: 1 hour
Total Time: 1 hour 15 minutes
Servings: 8 servings
Calories: 326kcal

Ingredients

  • 4 large russet potatoes scrubbed and rinsed
  • 3 Tbsp unsalted butter
  • 3 cloves garlic minced
  • ½ tsp salt
  • 1 tsp pepper
  • ¼ cup all-purpose flour
  • 1 cup milk
  • 1 cup Guinness
  • 1 cup bread crumbs
  • 1 cup shredded cheddar cheese
  • ½ cup shredded smoked gouda

Instructions

  • Using a mandoline, slice potatoes to a 1/4-1/8 inch thickness. Set slices aside.
  • In a large saute pan, add butter, garlic, salt, and pepper. Heat until butter is melted. Add flour and stir until incorporated.
  • Add milk and Guinness and cook on medium heat until sauce thickens.
  • Add shredded cheese and stir until melted.
  • Layer ½ potatoes in greased baking dish, and pour half of the cheese mixture on top. Repeat with the remaining potatoes and cheese mixture.
  • Cover dish with foil and bake at 375 for approximately 30 minutes. Remove foil and bake for an additional 20 minutes.
  • Once baked, broil on low for approximately 5-7 minutes, or until top turns golden brown.

Once this dish goes in the oven, you have about 45 minutes to relax…so finish the rest of the Guinness and toast a job well done.  Cheers!

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