Simple Chicken & Gravy

Ingredients

• 2 cups chicken broth
• 1/2 cup beef broth
• 1/2 chicken bouillon cube
• heavy cream or half-and-half, to taste
• 1 teaspoon Worcestershire sauce, can substitute soy sauce
• 1/2 teaspoon onion powder
• 1/2 teaspoon garlic powder
• 1/2 teaspoon mustard powder
• 1/4 teaspoon dried thyme
• 1/4 teaspoon ground sage
• 1/4 teaspoon black pepper, plus more, to taste
• 2 large chicken breasts, boneless and skinless
• salt, to taste
• 1/2 cup flour, divided
• 2 tablespoons olive oil
• 1/2 cup white wine, such as pinot grigio, chardonnay, or sauvignon blanc, can substitute chicken broth
• 4 tablespoons butter
• mashed potatoes, optional, to taste, cooked and warm, for serving
• green beans, optional, to taste, roasted and warm, for serving