Prepare the Vegetables: Heat olive oil or butter in a large skillet over medium heat. Add mushrooms and sauté for 3-4 minutes until they begin to soften.

Cook the Cauliflower: Add cauliflower florets to the skillet. Stir well to coat with oil and cook for about 5 minutes.

Add Seasonings: Stir in minced garlic, salt, black pepper, smoked paprika, and red pepper flakes. Cook for another 5-7 minutes until cauliflower is tender but slightly crisp.

Finish and Serve: Drizzle with lemon juice and sprinkle with fresh parsley. If desired, top with Parmesan cheese before serving. Serve warm as a side dish.