Jam-Filled Cake with Chocolate Glaze

INGREDIENTS

1/2 cup

unsalted butter, plus more for pan

1 1/2 cups

all-purpose flour, (spooned and leveled), plus more for pan

1 1/2 tsp

baking powder

1/2 tsp

coarse salt

large eggs, room temperature

1 cup

sugar

1/2 cup

whole milk

1 tsp

pure vanilla extract

1 1/2 cups

thick fruit jam, such as raspberry

6 oz

bittersweet or semisweet chocolate, finely chopped

1 tbsp

light corn syrup

2/3 cup

heavy cream

to 30 Chocolate-Glazed Raspberry Cream Puffs (optional)