Preheat oven to 350f

Combine flour, sugar and baking powder and salt in a bowl and whisk

In a separate bowl mix melted butter, eggs and vanilla extract until combined

Pour the wet ingredients into the dry ingredients. Stir just until combined; the batter may be lumpy, which is fine. Be careful not to overmix.

In a small bowl, toss the raspberries lightly with a tablespoon of flour (this helps prevent sinking). Gently fold the flour-coated raspberries, chopped nuts, and chocolate chips into the batter.

Pour the batter into the prepared loaf pan. Bake for fifty to sixty minutes, or until a toothpick inserted into the center comes out clean.