Hash Brown Nests with Portobellos and Eggs Recipe... Hash Brown Nests with Portobellos and Eggs Recipe Ingredients 3 cups frozen shredded hash brown potatoes, thawed 3 cups chopped fresh portobello mushrooms 1/4 cup chopped shallots 2 tablespoons butter 1 garlic clove, minced 1/2 teaspoon salt 1/4 teaspoon pepper 2 tablespoons sour cream 1 tablespoon minced