Step 1: Cooking the Polenta Base

1. Bring Liquid to a Boil: In a medium saucepan, combine the water or vegetable broth and salt. Bring to a rolling boil over medium-high heat. Using broth instead of water will add a richer, more savory flavor to your polenta fries.
2. Whisk in Polenta Gradually: Slowly pour the polenta into the boiling liquid in a thin, steady stream while continuously whisking with a whisk. This is crucial to prevent lumps from forming. Keep whisking vigorously until all the polenta is incorporated.
3. Reduce Heat and Simmer: Reduce the heat to low, so the polenta is gently simmering. Continue to whisk frequently for the first few minutes to ensure no lumps form.
4. Cook Until Thickened: Switch to a wooden spoon or spatula. Continue to cook, stirring occasionally, for about 20-25 minutes, or until the polenta is very thick and pulls away from the sides of the pan. It should have a smooth, creamy consistency. Don’t rush this step; cooking the polenta properly is key to the texture of your fries.
5. Season and Flavor: Once the polenta is cooked and thick, remove it from the heat. Stir in the black pepper, garlic powder, Italian herb blend, and optional Parmesan cheese (if using). Mix well to combine all the seasonings evenly throughout the polenta. Taste and adjust seasoning if necessary.
6. Pour into a Pan and Chill: Lightly grease an 8×8 inch square baking dish or similar sized container with olive oil. Pour the hot polenta mixture into the prepared dish and spread it out evenly with a spatula. Smooth the top.
7. Refrigerate to Firm Up: Let the polenta cool slightly at room temperature, then cover the dish with plastic wrap or a lid and refrigerate for at least 2 hours, or preferably overnight, to allow it to firm up completely. This chilling process is essential for the polenta to become firm enough to cut into fries and hold its shape during cooking.

Step 2: Cutting and Shaping the Polenta Fries

1. Remove from Dish and Cut: Once the polenta is thoroughly chilled and firm, remove it from the refrigerator. Invert the baking dish onto a cutting board and gently tap to release the polenta block.
2. Slice into Fries: Using a sharp knife, cut the polenta block into fry shapes. You can make them thick-cut, thin-cut, or wedge-shaped, depending on your preference. Aim for roughly uniform sizes for even cooking. Typically, fries are around ½ to ¾ inch thick and 3-4 inches long.

Step 3: Cooking the Polenta Fries for Crispy Perfection

You have several options for cooking your polenta fries to crispy perfection: frying, baking, or air frying. Each method yields slightly different results, but all are delicious!

Option 1: Frying for Ultimate Crispiness

1. Heat Oil in a Skillet: Pour about ¼ inch of olive oil into a large skillet over medium-high heat. Heat the oil until it shimmers and a drop of water sizzles immediately when added.
2. Fry in Batches: Carefully place the polenta fries in the hot oil in a single layer, being careful not to overcrowd the skillet. Fry in batches to maintain oil temperature and ensure even crisping.
3. Fry Until Golden Brown and Crispy: Fry for about 3-4 minutes per side, or until the fries are golden brown and crispy on all sides. Flip them gently with tongs or a spatula to ensure even browning.
4. Drain Excess Oil: Remove the fried polenta fries from the skillet with a slotted spoon and place them on a paper towel-lined plate to drain excess oil.

Option 2: Baking for a Healthier Approach

1. Preheat Oven and Prepare Baking Sheet: Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
2. Toss with Olive Oil: In a bowl, toss the polenta fries with a drizzle of olive oil (about 1-2 tablespoons) to lightly coat them. This helps them crisp up in the oven.
3. Arrange on Baking Sheet: Arrange the polenta fries in a single layer on the prepared baking sheet, ensuring they are not overcrowded.
4. Bake Until Golden and Crispy: Bake for 20-25 minutes, flipping them halfway through, until they are golden brown and crispy. For extra crispiness, you can broil them for the last 1-2 minutes, watching carefully to prevent burning.

Option 3: Air Frying for Quick Crispiness

1. Preheat Air Fryer: Preheat your air fryer to 400°F (200°C).
2. Lightly Oil Fries: Lightly spray the polenta fries with olive oil spray or toss them with a very small amount of olive oil.
3. Air Fry in Batches: Place the polenta fries in the air fryer basket in a single layer, being careful not to overcrowd. You may need to cook in batches depending on the size of your air fryer.
4. Air Fry Until Crispy: Air fry for 12-15 minutes, shaking the basket or flipping the fries halfway through, until they are golden brown and crispy.

Step 4: Prepare the Marinara Dip and Serve

1. Warm Marinara Sauce: While the polenta fries are cooking, gently warm the marinara sauce in a saucepan over low heat or in the microwave until heated through.
2. Garnish (Optional): If desired, sprinkle the cooked polenta fries with fresh chopped parsley or basil.
3. Serve Immediately: Serve the crispy polenta fries hot, immediately after cooking, with a generous bowl of warm marinara sauce for dipping. Enjoy!