Keto Shepherd's Pie (No cauliflower!)

Ingredients

• 2 lb small turnips
• 1/2 medium russet potato (don't worry, not for eating)
• 1 cup chicken broth
• 3 ½ tablespoons unsalted butter
• 1/3 cup heavy whipping cream
• 1/2 teaspoon pepper
• salt to taste
• 1 cup shredded cheddar cheese
• 2 tablespoons butter
• 3 celery stalks, chopped
• 1/4 cup finely chopped yellow onion
• 1/3 cup finely chopped carrot
• 2/3 cup fresh, canned or frozen green beans
• 4 cloves garlic, minced
• 1/2 teaspoon dried thyme
• 1/2 teaspoon dried rosemary
• 1 ½ pounds ground beef or lamb
• 1/2 teaspoon salt
• 1/2 teaspoon black pepper
• 1/3 cup tomato paste
• 2 tablespoons worcestershire sauce
• 3/4 cup beef broth
• 1/2 cup chopped parsley