
Preheat oven to 350°F (177°C). Grease and line two 8-inch round cake pans with parchment paper.
In a medium bowl, whisk together gluten-free flour, baking powder, and salt.
In a large bowl, beat butter and sugar until light and fluffy, about 3 minutes.
Add eggs one at a time, beating well after each addition. Mix in vanilla extract.
Fold in the dry ingredients, then stir in milk until smooth.
Divide batter evenly between prepared pans and smooth the tops.
Bake for 25–30 minutes, until golden, and a toothpick inserted in the center comes out clean.
Cool in pans for 10 minutes, then transfer to wire racks to cool completely.
Place one cake layer on a serving plate. Spread jam evenly over the top, then add whipped cream.
Top with the second cake layer and dust with powdered sugar before serving.