Step 1: Preheat your oven to 350°F (175°C).
Step 2: Generously grease the inside of your Bundt pan with 1 ½ tablespoons of butter.
Step 3: Open the package of biscuit dough and cut each biscuit into quarters.
Step 4: In a large mixing bowl, combine the granulated sugar, cinnamon, and cardamom. Whisk until well mixed.
Step 5: Toss the quartered biscuit pieces in the sugar mixture until coated.
Step 6: Place half of the coated biscuit pieces in the Bundt pan. Melt the unsalted butter and mix in brown sugar, salt, and vanilla. Pour half over the biscuit layer.
Step 7: Layer the remaining biscuit pieces and pour the rest of the butter mixture on top.
Step 8: Bake for about 30-35 minutes, until golden brown and a toothpick comes out clean.
Step 9: Cool for 10 minutes, then invert onto a serving plate and enjoy!