Spelt Doughnut Muffins with Raspberry Jam

Name: Spelt Doughnut Muffins with Raspberry Jam
Prep time: 15 min
Cook time: 17 min
Total time: 32 min
Cuisine: American
Ingredients: 30g (2 tbs) butter (room temperature); 2 tbsp vegetable oil; 50g (¼ cup) white sugar; 35g (2 tbsp + 2 tsp) brown sugar; 1 egg (medium); 1 tsp vanilla extract; ¾ tsp baking powder; ¼ tsp baking soda; ¼ tsp nutmeg; ½ tsp cinnamon; 150g (1¼ cups) spelt (see note 1); 125ml (½ cup) milk; 6 tsp raspberry jam; 20g (1 tbsp + 1 tsp) butter (melted); 30g (2 tbsp + 1 tsp) brown sugar