MUFFINS:
Pre heat oven to 350 degrees. Line muffin tin with paper cups.
Place flour, brown sugar, baking powder and salt in bowl.
In separate bowl put in the sour cream, vanilla and almond extracts, vegetable oil and egg. Mix until blended.
Add the dry ingredients to the sour cream mixture. Fold batter until we'll blended.
Add in almond pastry filling and fold until well incorporated.
Fold in blueberries. Scoop into muffin tins, fill each half way.
Top with streusel, using all of it.
Bake 30-35 mins, until toothpick inserted in center comes out clean. Let cool 10-15 minutes.
STREUSEL:
Add flour, sugars and cinnamon to the melted butter. Mix until you have a crumbly mixture.