Creamy Sous Vide Parmesan Polenta - A Duck's Oven

Ingredients

• 1 cup polenta ((coarsely ground cornmeal))
• 2 cups chicken or vegetable stock
• 2 cups milk (2%, whole, or half and half)
• 2 tbsp butter (melted)
• 1 tsp kosher salt
• 1/2 tsp freshly cracked black pepper
• 1/2 cup grated parmesan