Preheat your oven to the temperature specified on your brownie mix box, typically around 350°F (175°C). Spray an 8 x 8-inch baking pan with non-stick cooking spray.

Prepare the brownie mix according to the package instructions, combining it with water, oil, and eggs. Stir until smooth and glossy.

Gently fold in 1 cup of raspberries into the batter, being careful not to crush them too much.

Spoon 2 tablespoons of raspberry jam in dollops across the surface and swirl it lightly into the batter.

Press a few more raspberries gently on top of the brownie batter for visual appeal.

Bake in the preheated oven according to box instructions, about 25 to 30 minutes. Check for doneness with a toothpick.

Let the brownies cool in the pan for about 10 to 15 minutes before cutting them into squares.