Ingredients

2-3 lb. corned beef

1/3 c. dijon mustard

2 tbsp. packed brown sugar

1 (12-oz.) bottle Guinness

4 lb. medium yukon gold potatoes, cut into 1/2" thick rounds

2 tbsp. extra-virgin olive oil

1 tsp. dried oregano

1/2 tsp. garlic powder

Kosher salt

Freshly ground black pepper

1 c. shredded cheddar

1 c. shredded white cheddar

1/2 small red onion, thinly sliced

1 (15-oz.) can black beans, rinsed and drained

1/2 c. sour cream

1 tbsp. prepared horseradish

Pickled jalapeños

Freshly chopped chives

Preparation

Step 1Preheat oven to 325°. Place brisket in a large pot and cover with water. Over high heat, bring to a boil. Drain and repeat once more. Drain brisket and place into a large baking dish. Step 2In a small bowl, combine mustard and brown sugar. Spread all over brisket, then pour in Guinness around brisket. Cover with aluminum foil. Step 3Bake for 2 hours, then uncover and continue baking until fork tender, 45 to 60 more minutes. Remove from pan and let rest 10 minutes before shredding. Step 4Increase oven to 425°. Place sliced potatoes into a large pot and cover with water. Over high heat, bring to a boil. Let boil until just starting to get tender, about 5 minutes. A knife inserted into the middle should meet a little resistance. Drain and pat dry with paper towels. Step 5Line 2 large baking sheets with foil and spread potatoes into an even layer between both pans. Drizzle both pans with oil and season with oregano, garlic powder, salt, and pepper. Gently toss potatoes around to coat evenly. Bake until golden and crisp, about 30 minutes. Step 6On one of the trays, bring potatoes to center of tray, overlapping slightly so that they are close together. Sprinkle about half of both cheeses all over and top with half of the red onion, beans, and shredded corned beef. Top with potatoes from other tray and add remaining cheese, red onion, beans, and corned beef. Place tray back in oven and bake until cheese is melty, about 5 minutes. Step 7In a small bowl, combine sour cream and horseradish. Step 8Top nachos with dollops of sour cream, pickled jalapeños, and chives.

Have you made these yet? Let us know how it went in the comments below!