Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3). Mix milk, cream, parmesan and pesto. Season to taste with salt and pepper.
Mix uncooked gnocchi, frozen peas and pesto cream. Pour into a greased casserole dish. Tear the bacon into small pieces and spread on top. Bake in a preheated oven for 20-25 minutes.