Prepare your flax egg by combining 1 tablespoon of flaxseed with 3 tablespoons of water. Let sit for 10 minutes, for a gel to form.
Preheat the oven to 180C/350F and line an 8 x 8-inch square pan with parchment paper.
In a large mixing bowl, add your flour, baking soda, and salt and mix well. Set aside.In seperate bowl, add your sugars with butter. Using a hand mixer or stand mixer, cream together until combined.
Add your creamed butter/sugar to the dry mixture. Add your vanilla extract, molasses (if using it) and flax egg and mix together, until just combined. Fold through chocolate chips, reserving a handful to top the blondies with.
Transfer the batter into the lined pan and top with extra chocolate chips. Bake for 15-17 minutes, until the edges are just starting to brown. Do not bake longer than 17 minutes.
Remove from the oven and allow to cool in the pan completely, before slicing.
Notes
* To make a flax egg, mix 1 tablespoon of ground flaxseed with 3 tablespoons of water. If you don't follow a vegan diet, you can substitute for one large egg.** Gives an even more gooey texture. Can omit, if desired.TO STORE: Leftover bars should be stored in an airtight container in the fridge for up to 1 week. TO FREEZE: Wrap the bars in foil and freeze for up to 3 months. Let them thaw overnight.