Upside-Down Sticky Pear and Walnut Cake Recipe - Nicola Lamb

Name: Upside-Down Sticky Pear and Walnut Cake Recipe - Nicola Lamb
Cuisine: European, British
Ingredients: 60g of walnuts; 240g of soft light brown sugar; 80g of butter; 120g of double cream; 3g of flaky sea salt, about 1 tsp; 400g of pears, about 2; 100g of butter, softened; 100g of soft dark brown sugar; 25g of caster sugar; 100g of whole egg; 90g of plain flour; 15g of buckwheat flour; 8g of baking powder, about 2 tsp; 1/2 tsp ground cinnamon; 1g of flaky sea salt, about 1/2 tsp; 20g of toasted walnuts from above; 45g of whole milk; 35g of double cream; ice cream, or pouring cream, to serve