Chicken with long-grain and wild rice

Heat 2 teaspoons butter in a large pot on medium. Add mushrooms, garlic, salt and pepper; stir and cook 6 minutes or until mushrooms are moist and browning. Add rice blend (discard seasoning packet), stir and cook 2 minutes. Add broth and remaining butter. Bring to boil, reduce heat to low; cover and cook according to rice package directions, or until rice is tender and broth is nearly absorbed. Stir in chicken and sour cream. Cook, uncovered, on low 5 to 6 minutes, stirring occasionally, or unt...