Champagne Chicken Recipe

Name: Champagne Chicken Recipe
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: American
Ingredients: 2 large boneless skinless chicken breasts, cut in half horizontally to make four fillets; ½ cup all-purpose flour; 1 ½ teaspoons salt, divided; ½ teaspoon black pepper, divided; 1 teaspoon garlic powder; 2 tablespoons unsalted butter, divided; 3 tablespoons olive oil, divided; 8 ounces sliced mushrooms; 1 large shallot, minced; ½ cup champagne or sparkling white wine; 1 cup heavy cream; ½ cup chicken broth