In the same sauce pan, heat the remaining 1 tablespoon olive oil over medium heat. Add the mushrooms and cook, stirring occasionally, until soft. Add the garlic and stir for 1 - 2 minutes to toast. Then stir in the dijon, soy sauce, coconut milk, broth, arrowroot starch, sage, thyme, sea salt, and black pepper. Gently mix to distribute and allow the mixture to simmer until thick and creamy.
12 oz mushrooms, 3 cloves garlic, ½ Tbsp dijon mustard, ½ Tbsp soy sauce, ½ cup coconut milk, 1 ½ cup vegetable broth, 1 Tbsp arrowroot starch, 3 sage leaves, 1 tsp thyme, ¼ tsp sea salt, ⅛ tsp black pepper