Creating Chocolate Raspberry Sandwich Cookies is straightforward if you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper.
2. Cream the Butter and Sugars: In a large mixing bowl, use an electric mixer to cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
3. Add Eggs and Vanilla: Beat in the eggs one at a time, then mix in the vanilla extract until well combined.
4. Combine Dry Ingredients: In another bowl, whisk together the all-purpose flour, cocoa powder, baking soda, and salt.
5. Mix Dry and Wet Ingredients: Gradually add the dry ingredient mixture to the wet ingredients, blending until just combined. Avoid overmixing.
6. Scoop the Dough: Using a cookie scoop or tablespoon, scoop out portions of dough and place them on the prepared baking sheets, spacing them about 2 inches apart.
7. Bake the Cookies: Bake in the preheated oven for 10-12 minutes, or until the edges are set but the centers are still soft. Remove from the oven and let them cool on the baking sheets for a few minutes before transferring to wire racks to cool completely.
8. Prepare the Filling: Once the cookies are completely cooled, take a teaspoon of raspberry jam and spread it on the flat side of half of the cookies.
9. Sandwich the Cookies: Place another cookie on top of each jam-covered cookie to create a sandwich.
10. Dust with Powdered Sugar: Optional: Dust the tops of the sandwich cookies with powdered sugar for an elegant finish.

These steps will guide you in creating these incredible cookies effortlessly, ensuring a delightful treat for everyone to enjoy!