01 - Heat 1 tablespoon of olive oil in a large skillet over medium heat. Add turkey bacon and cook for 3 to 4 minutes until browned and crisp. Remove with a slotted spoon and set aside.
02 - Add remaining olive oil to the skillet. Sauté onions for 2 minutes until translucent.
03 - Place Brussels sprouts cut side down in the skillet. Cook undisturbed for 4 to 5 minutes until golden brown.
04 - Stir in garlic and season with salt, black pepper, and optional crushed red pepper flakes. Cook for 4 to 5 minutes, stirring occasionally, until tender but still bright green.
05 - Return turkey bacon to the skillet and toss with Brussels sprouts to combine.
06 - Remove from heat. Drizzle with lemon juice and sprinkle with Parmesan cheese if desired. Serve warm.