Heat a Dutch oven over medium-high heat. Add the butter and allow to melt.
⅓ cup salted butter
Once the butter is melted, stir in the flour and use a whisk to combine until smooth. Slowly pour in the milk, whisking as you add. Stir in the sugar, salt, and pepper. Bring to a boil and then reduce to a simmer.
⅓ cup Bob's Red Mill 1:1 Gluten Free Flour, 2½ cups 2% milk, ¼ cup granulated sugar, 1 teaspoon kosher salt, Ground black pepper
Stir in ¼ cup Parmesan cheese, corn, bacon, and mascarpone. Stir until fully melted, cooked through, and creamy.
½ cup freshly grated Parmesan cheese, 5 cups frozen corn, ¼ cup cooked bacon crumbles, ¼ cup mascarpone cheese
Remove from heat and sprinkle with the remaining ¼ cup parmesan cheese.
Broil for 4-5 minutes on high until the cheese is toasted and bubbly.