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 tablespoon dijon mustard, ½ tablespoon soy sauce, ½ cup coconut milk, 1 ½ cup vegetable broth, 1 tablespoon arrowroot starch, 3 sage leaves, 1 teaspoon thyme, ¼ teaspoon sea salt, ⅛ teaspoon black pepper