Chocolate Hazelnut Croissants

Name: Chocolate Hazelnut Croissants
Ingredients: 7 - croissants (slightly stale); ¾ cup - dark chocolate (chopped, can use semisweet or a combination); ⅓ cup - raw hazelnuts (chopped, for the top); 2 cups - raw hazelnuts (to make hazelnut flour); - powdered sugar (for the top); 1 ¼ cup - hazelnut flour ((166g)); ½ cup - sugar ((100g)); 2 - large eggs; ½ cup - butter, room temp ((112g)); ¼ tsp - salt (to taste, I like it saltier); ⅓ cup - water ((118mL)); ⅓ cup - sugar ((66g)); 2 Tbsp - hazelnut flour