Preheat the oven to 350°F (175°C). Grease and flour a 9-inch loaf pan.
In a large mixing bowl, cream together the softened butter and sugar until light and fluffy.
Add the eggs one at a time, mixing well after each addition.
Stir in the sour cream, milk, and vanilla extract.
In a separate bowl, whisk together the flour, baking powder, and salt. Gradually add this dry mixture to the wet ingredients, stirring just until combined.
Pour the batter into the prepared loaf pan and smooth the top.
Swirl in the strawberry preserves using a knife, creating a marbled effect.
Bake in the preheated oven for 50-55 minutes or until a toothpick inserted into the center comes out clean.
While the cake is baking, prepare the crunch topping by mixing the crushed freeze-dried strawberries, sugar, and melted butter.
Sprinkle the crunch topping over the cake during the last 10 minutes of baking.
Allow the cake to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.