Step 1

Season beef pieces with 1 1/2 tsp kosher salt and 1 tsp black pepper.  Heat vegetable oil in a large skillet over MED-HIGH heat until shimmering, then add beef in a single layer (you may have to do this in batches to avoid overcrowding the pan).  Brown on all sides, about 1-2 minutes per side, then turn off heat.  Remove beef to slow cooker.

Step 2

Pour beer and broth into hot pan and stir to loosen any browned bits.  Let sit for a few minutes while you add other ingredients.

Step 3

Add carrots, parsnips, potatoes, onion, garlic, sage, beef base and tomato paste to slow cooker with the browned beef.  Pour beer/broth mixture from the skillet into the slow cooker.  Cover and cook on LOW for 7 - 7 1/2 hours.

Step 4

Mix together butter and flour to form a pasty ball.  Remove lid, add horseradish and butter/flour mixture, stirring well.  Cover and continue cooking another 20-30 minutes, stirring occasionally.  Taste, and add additional salt and pepper as needed.

Step 5

Sprinkle with fresh parsley and serve!