Step 1

Whisk together all of the spice rub ingredients in a small bowl; set aside.

Step 2

Pat beef pieces dry with paper towels then liberally season with the spice rub, gently pressing to adhere. Save any excess spices to add to the pot later.

Step 3

Heat 1 ½ tablespoons vegetable oil in a large cast iron skillet (or large Dutch oven for oven/stovetop method) over medium-high heat. Once very hot, add cubed beef and sear on all sides.

Step 4

Transfer beef to a 6 quart (or larger) slow cooker along with all remaining ingredients, including any leftover spices. Stir to combine. Cover and cook on HIGH for 3 ½ – 4 ½ hours or on LOW for 6-8 hours, OR until the beef shreds easily with two forks.

Step 5

Remove the beef to a rimmed plate or large bowl (do NOT discard juices in slow cooker), and shred with two forks, discarding any excess fat.

Step 6

Add the shredded beef back to slow cooker and toss with slow cooker juices. Cook on low for 20 minutes for beef to absorb juices. Taste and season with hot sauce/cayenne pepper, lime juice or brown sugar to taste.

Step 7

Remove beef with a pair of tongs to a serving bowl or strain in colander so tacos, etc. don’t get soggy. I like to save the liquid to cook my rice in (just add liquid plus water needed for rice). Serve in tacos, burritos, quesadillas, taquitos, salads, nachos, etc.