Spinach & Feta Cheese-stuffed Chicken with Green Beans & Mayer Lemon Butter, Spinach & Feta Cheese-stuffed Chicken

boneless chicken breast, spinach, meyer lemon butter(buttercream, salt, lemon juice, onion powder, lemon zest, meyer lemon zest, garlic, salt, black pepper, cornstarch, citric acid, cream cheese (pasteurized milk and cream, cheese culture, salt, guar gum, low moisture part-skim mozzarella cheese (pasteurized part-skim milk, salt, potato starch, powdered cellulose, feta cheese (pasteurized cow's milk, skim milk, salt, cheese culture, powdered cellulose, heavy cream, bread crumbs (wheat flour, less than 2% of: sugar, yeast, salt, minced garlic, chopped onion, oat fiber, parsley, salt, seasoning oil (canola and/or soybean oil, dried parsley and thyme, granulated garlic, canola oil, rosemary extract (canola oil, rosemary extract, vinegar, black pepper