Add the peanut oil to the deep fryer or dutch oven until it reaches about 4 inches up the sides and heat your oil to 375°F.
While you're heating the oil, make the cheese curd batter. Whisk together the flour, baking powder, garlic powder, and onion powder in a large bowl.
Next, stir in the buttermilk and club soda or beer until it's nice and smooth.
Coat the cheese curds in the batter.
Carefully, a handful at a time, add the cheese curds to the hot oil. Do not let them touch each other in the hot oil. When you're not frying the curds, place the remaining curds in the bowl back into the refrigerator so the rest stay cold.
Let the curds fry for about 1 minute in the peanut oil, flip them halfway through and continue to fry them until they're light golden brown.
Remove the fried Cheese Curds from the oil, letting any excess oil drip off. Transfer them to a paper-towel-lined plate to soak up any excess oil. Then place the cheese curds on a wire rack that's on top of a sheet tray while you fry the remaining curds to cool.
Serve cheese curds immediately with marinara and ranch for dipping sauce options.