Preheat the oven to three hundred and fifty degrees, and grease a large baking dish.
Mix two cups of unsalted butter, four cups of gluten-free Bisquick, one-half cup of packed brown sugar, and one-half tea spoon of salt. Press into the bottom of the greased baking dish, and bake for twenty minutes.
Spread two cups of seedless raspberry jam over the top of the baked bottom layer. Add three cups of raspberries evenly over the top of the jam.
With an electric hand mixer, beat two packages of cream cheese, one cup of white sugar, and two tablespoons of gluten-free Bisquick until smooth. Add two eggs, two egg yolks, four tablespoons of lemon juice, four tablespoons of lemon zest, and one teaspoon of vanilla until well combined.
Bake for forty-five minutes. Chill in the refrigerator for four hours. Cut into squares, and store remainders in the refrigerator.