1. Preheat oven to 350F and line your baking sheet with parchment paper
2. Add butter to a saucepan and cook on medium heat, until the butter begins to lightly brown (about 2 minutes)
3. Remove from heat and transfer to mixing bowl (let cool for 5 minutes)
4. Add brown sugar, sugar, eggs and vanilla, mix until smooth
5. Add flour, baking soda and salt
6. Gently swirl in the jam and blueberries, but do not fully mix the jam into the dough

To make the streusel:

1. Add flour, brown sugar, cinnamon, and butter to a mixing bowl
2. Mix together with your hands until you have a crumbly mixture (set aside)
3. Roll the dough into round tablespoon-size balls and place 2 inches apart on prepared bakeware
4. Bake for 10-12 minutes until lightly golden brown on edges
5. Let cookies cool on baking sheet