Step 1

Season the beef with the chili powder, cumin, 1 tablespoon salt, and 1/2 teaspoon pepper. Select the Sauté setting on a 6 or 8-quart electric pressure cooker; adjust for high heat. Add 2 tablespoons of the olive oil to the pressure cooker. Add the seasoned beef and sear on all sides, about 8 minutes total. Add to the beef 1 cup of the salsa and 1 tablespoon water. Lock the lid and cook on high pressure for 40 minutes. Allow the pressure to naturally release from the cooker for 10 minutes, then quick-release any remaining pressure.

Step 2

Remove the beef from the liquid to a rimmed plate, then shred with two forks. Return the meat to the pressure cooker to heat through. Season to taste with salt and pepper. Keep warm.

Step 3

In a large skillet over medium-high heat, warm the remaining 1 tablespoon of olive oil. Add the cauliflower rice and cook, tossing often, until cooked through, 2 to 3 minutes. Season with salt and pepper.

Step 4

To serve, arrange serving bowls of the beef, cauliflower rice, shredded lettuce, shredded cheese, sour cream, guacamole, and the remaining 1 cup salsa and let everyone build their own bowl.