01 -
Clean Brussels sprouts thoroughly and trim the ends. Shred using a food processor with slicing attachment, a sharp knife, or use pre-shredded Brussels sprouts.
02 -
Set a large skillet over medium heat. Add butter and bacon grease, allowing both to melt and combine.
03 -
Add shredded Brussels sprouts to the skillet. Season with garlic salt and red pepper flakes. Toss well to ensure even coating with fats and seasoning.
04 -
Sauté for 8 to 10 minutes, stirring occasionally, until Brussels sprouts are just tender and beginning to brown slightly.
05 -
Remove skillet from the heat. Add grated parmesan cheese and stir until thoroughly combined.
06 -
Transfer to a serving bowl. Optionally drizzle with balsamic reduction or balsamic vinegar before serving.