Vegan Brown Gravy

Ingredients

• 3 tablespoons all purpose flour
• 1/4 cup water
• 1/2 cup dried porcini mushrooms
• 3 cups water
• 2 tablespoons olive oil
• 1 medium red onion (diced small)
• 1 green onion (diced small)
• 3 cloves garlic
• 1/4 cup vegetable broth (for deglazing the pan)
• 1 1/2 cup vegetable broth (additional)
• 6 ounces portobello mushrooms (sliced and cut into 1- to 2-inch pieces)
• 5 sprigs fresh rosemary
• 3 sprigs fresh thyme
• 1/2 teaspoon salt
• black pepper (to taste)