How To Bake Thaw Biscuits in fridge overnight. Add butter to a deep pot or dutch oven over medium-high heat. Add the onion, garlic and celery and sauté until softened. Add the flour and cook until golden brown, stirring often. Add the broth, potatoes and herbs and bring to a simmer, stirring frequently. Simmer for 5-10 minutes. Add the frozen vegetables, turkey and heavy cream and simmer for another 5 minutes. Season with salt and pepper to taste, remove from heat, and set aside to cool. Preheat oven to 400 degrees. Once cooled, pour mixture into a 9x13 baking dish and top with 12 Mason Dixie Biscuits. Bake for 35-40 minutes until the biscuits are golden brown. Enjoy!