Preheat oven to 350 degrees Fahrenheit. Optional: Line your 1lb loaf pan with parchment paper. Or spray pan with baking spray.
In a large bowl, whisk together flour, baking powder, salt, nutmeg, and cinnamon.
In the same bowl, add melted butter and milk. Mix. Then add in eggs, vanilla, and sour cream. Mix until well combined.
Pour less than half of the batter into the prepared loaf pan. Take half of the raspberry jam and swirl it on top of the batter. Then pour enough batter to cover the raspberry jam. Then swirl in the remainder of the jam. Top with the remainder of the bread batter.
Smooth out the batter and bake for 60-75 minutes or until a toothpick inserted into the center of the bread comes out clean. Once you remove the bread from the oven, butter and sprinkle the top of the loaf with granulated sugar. Let the bread cool in the pan for about 1 hour before slicing and enjoying.
Notes
Make sure your ingredients are at room temperature before baking
When the bread comes out of the oven, I liketo butter it and top with granulated sugar.
You can line your baking pan with parchment paper.