Trim your brussels sprouts by cutting off the bottom stem area. Then, cut each brussels sprout in half. Set aside.
Preheat your oven to 400F
Line a sheet pan with parchment paper
Melt your butter and combine it with the olive oil. Using a basting brush (or a spoon), add about half of your butter mixture to the parchment paper. Make sure it is equally distributed.
Add an even coating of cheese over the butter mixture.
Push down each brussels sprout half in on top of the cheese. You can do this at random, or you can create equal rows of brussels sprouts.
Using a basting brush, add the rest of the butter mixture on top of the brussels sprouts. And then equally distribute your seasoning salt on top.
Bake for 20 minutes and then remove from the oven and let rest (untouched) for 5-10 minutes.