Cut the ends of each Brussels sprout and cut them in half lengths.
Place the cut Brussel sprouts into a bowl of water and 1 Tablespoon of salt.
Allow the Brussel sprouts in sit in the salt water for 1-2 hours to remove any extra debris.
Rinse the Brussel sprouts and return to a bowl.
In a deep skillet, add about 1 inch of water and 2 teaspoons of salt.
Bring the water to a boil and add the cut Brussel sprouts.
Place a cover on the pan, and blanch for 2 minutes.
Prepare a large bowl with cold water and ice.
Drain the Brussel sprouts and add to the ice bath to stop cooking.
Once cooled, drain the Brussels sprouts for a second time.
Preheat the oven to 425 degrees.
Spread the blanched Brussels sprouts in a single layer on a baking sheet lined with parchment paper or a silicon baking mat.
Sprinkle with salt and pepper.
Cook for 20-25 minutes.