Preheat your pellet smoker to 225°F.
Prepare the roast by trimming excess fat and seasoning with salt and pepper or your favorite BBQ rub.
Make the garlic butter spread by combining 4 oz softened butter, 4 cloves of minced garlic, 1 sprig of rosemary, 2 sprigs of thyme, and a pinch of salt and pepper.
Spread garlic butter generously over the entire roast.
Place the buttered roast on the smoker over a baking sheet to catch the butter drippings and smoke for 35 minutes per pound, or until it reaches 125°F in the thickest part of the roast.
Once the roast reaches 125°F, remove it from the smoker and pour the butter drippings into a bowl, and set aside.
Increase the smoker temperature to 400°F.
Once the smoker has reached this higher temperature, place the roast back on the smoker and sear until the internal temperature reaches 135°F for medium-rare.
Remove the roast from the smoker and let it rest for 10-15 minutes
Thinly slice the bottom round roast and drizzle with the smoked garlic butter