2 tablespoons butter
1 small onion, finely chopped
2 cloves garlic, minced
8 ounces mushrooms, sliced
2 tablespoons all-purpose flour
2 cups vegetable broth or chicken broth
1 cup milk or half-and-half
1/2 teaspoon salt
1/4 teaspoon black pepper
1/4 teaspoon dried thyme
1 tablespoon heavy cream, optional
1 tablespoon chopped parsley, optional
Melt butter in a pot over medium heat
Add onion and cook until soft
Add garlic and cook for 30 seconds
Add mushrooms and cook until browned and softened
Stir in flour and cook for 1 minute
Slowly add broth while stirring
Bring to a simmer and cook until slightly thickened
Stir in milk, salt, pepper, and thyme
Simmer gently for 5 to 10 minutes
Stir in heavy cream if using
Garnish with parsley if desired