Hasselback Potato Bake with Feta - Serving Dumplings

Ingredients

• 2.2 pounds small potatoes
• 2 ounces grated Parmesan
• 1 cups cream 20% fat
• 1 tsp salt
• 1 tsp black pepper
• 1 tsp garlic powder
• 1 tsp dried onion
• 1 tbsp unsalted butter (for greasing)
• 7 ounces feta
• freshly ground black pepper (for sprinkling)
• 8 thyme sprigs