Allow dough to sit at room temperature for 30 minutes up to 1 hour.
Set oven to 375°F (190°C). Prepare a baking sheet by lining with parchment paper.
Coat the exterior of a 6-ounce ramekin with oil or nonstick spray, then position it in the middle of the lined baking sheet. Add water to fill.
With a digital scale, portion dough into 1-ounce pieces, making 22-24 pieces total, flatten each piece into a disk, then roll into a ball.
In a small bowl, mix together butter, parsley, garlic, and salt.
Arrange dough balls on the baking sheet in a ring around the ramekin. Apply butter mixture to tops with a brush; scatter Parmesan over.
Transfer to oven and bake until browned, about 25-30 minutes. Carefully take out ramekin and pour off water. Add marinara to it and put back in the center of the baking sheet; brush tops with any leftover butter mixture.
Serve right away.