Melt the butter in a large pan over medium high heat. When the foaming subsides, add the mushrooms and a generous pinch of salt. Cook on high heat until they release their liquid, about 5 minutes
Add in the thyme, rosemary, sage, and red pepper and cook, stirring occasionally until the mushrooms start to brown, about 10 minutes. Add the garlic and cook until fragrant, about 1 minute more.
Add the coconut aminos and cook until no liquid remains. Off heat, stir in lemon juice and then season to taste with salt and pepper.
Serve over polenta with 1/2 head of roasted garlic whisked in.