Preheating and Pan Preparation: Initiate by preheating the oven to a temperature of 350 degrees Fahrenheit. Concurrently, prepare an 8x8 inch square baking pan by lining it meticulously with parchment paper.
Creaming Process: In a mixing apparatus equipped with a paddle attachment, commence by creaming together the unsalted butter, light brown sugar, and vanilla extract. Continue this process until the mixture attains a uniform and fully combined consistency.
Dry Ingredients Incorporation: With the mixer set to a low speed, gradually introduce the all-purpose flour and salt into the butter mixture. Continue this process until the mixture achieves a crumbly texture, indicative of the correct consistency.
Base Assembly: Carefully transfer approximately three-quarters of the shortbread dough into the previously prepared pan. Press down uniformly to create a flat and even surface, thereby forming the base layer of the shortbread.
Jam Layer Application: Proceed to evenly spread the jam of your choosing over the surface of the shortbread base. This layer should be uniformly applied to ensure consistent flavor distribution.
Final Layering: Utilize the remaining crumble of shortbread dough by scattering it over the top of the jam layer. This will form the final layer of the bars.
Baking: Place the pan in the preheated oven and bake for a duration of 25 to 30 minutes. The indication of completion is the shortbread attaining a light golden coloration.
Cooling Process: Upon removal from the oven, allow the Jam Shortbread Bars to cool completely within the pan. If time constraints exist, an alternative is to expedite the cooling process by refrigerating.
Serving Preparation: Once the bars have cooled, extract them from the pan and proceed to cut them into the desired shape and size. They are now ready to be served or stored as required.