1-Preheat your oven and prepare the pan: Start by preheating your oven to 350°F and lining an 8-inch square pan with parchment paper for easy removal.

2-Mix the wet ingredients: In a medium bowl, whisk the brown sugar, butter, and molasses until well combined to form a smooth base.

3-Add egg and vanilla: Next, add the egg and vanilla extract, whisking until everything mixes together evenly.

4-Combine dry ingredients: Then, incorporate the flour (or oats), cinnamon, baking powder, and salt using a flexible spatula until no dry spots remain.

5-Stir in raisins and spread batter: Stir in the raisins to distribute them throughout the mixture, then spread it evenly in the prepared pan.

6-Bake and cool: Bake for 25 to 30 minutes until the bars are evenly browned and set in the center, or use a thermometer to check for 205°F. Let them cool slightly in the pan before moving to a wire rack.

7-Optional glaze: If you like, add a glaze by whisking confectioners’ sugar with water and drizzling it over the top.