Butternut, Orange and Sage Galette

Name: Butternut, Orange and Sage Galette
Cuisine: European, Mediterranean, French
Ingredients: 680g butternut; 180g Carrots; 2tbsp Olive oil; 2tbsp Sage; 2tsp caraway seeds; 1 head of garlic; 160g Shallots; 160ml Orange juice; 1½tsp orange zest; 50ml Maple syrup; 125g Mascarpone; 1 egg; 100g Flour; 30g Wholemeal flour; 20g quick cook polenta; 1½tsp sugar; ¾tsp flaked sea salt; 6 leaves Sage; 20ml Olive oil; 80g Butter; 60ml ice-cold water