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The Secret to Perfectly Crispy Garlic & Rosemary Roasted Potatoes

By Chef: 250823 Monirojjaman July 31, 2026

Potatoes are the ultimate comfort food, but getting that restaurant-quality texture—shatteringly crispy on the outside and buttery soft on the inside—can be surprisingly tricky at home. If you've been looking for a fail-proof side dish that will steal the show at your next holiday gathering or elevate a simple weeknight dinner, you need to try these Garlic and Rosemary Roasted Potatoes.

A flat-lay, rustic photograph of all the raw, individual ingredients needed for the roasted potato recipe, arranged in small, distinct artisan ceramic bowls and tiny wooden spoons on a dark, weathered wooden table, similar to the setting in image_0.png. At the center is a bowl of gold potatoes (whole and quartered). Surrounding it are bowls of: extra virgin olive oil in a glass bottle, white cornstarch, garlic powder, onion powder, paprika, coarse sea salt, and black pepper. Fresh green rosemary sprigs and a wedge of Parmesan cheese with a small grater are placed nearby. Soft, natural window light from the left illuminates the scene, highlighting the textures. Blank space is designated at the top for title text overlay.

Not only is this recipe incredibly easy to throw together, but it also uses a few clever cooking hacks to guarantee the perfect crunch every single time. Let’s dive into how to make these addictive, golden-brown beauties.

Why You'll Love This Recipe

Casseroles are great, but they often require a lot of prep work, layering, and heavy ingredients. Roasted potatoes are entirely hands-off once they hit the oven. This recipe requires minimal chopping, basic pantry spices, and zero fuss.

A flat-lay, rustic photograph of all the raw, individual ingredients needed for the roasted potato recipe, arranged in small, distinct artisan ceramic bowls and tiny wooden spoons on a dark, weathered wooden table, similar to the setting in image_0.png. At the center is a bowl of gold potatoes (whole and quartered). Surrounding it are bowls of: extra virgin olive oil in a glass bottle, white cornstarch, garlic powder, onion powder, paprika, coarse sea salt, and black pepper. Fresh green rosemary sprigs and a wedge of Parmesan cheese with a small grater are placed nearby. Soft, natural window light from the left illuminates the scene, highlighting the textures. Blank space is designated at the top for title text overlay.

The Ingredients You Need

To make these crave-worthy potatoes, you’ll need:

  • Small New Potatoes: Yellow or gold potatoes are ideal because they have a naturally creamy, buttery texture.

  • Olive Oil: Don't skimp on this! A generous pour of olive oil is essential for helping the potatoes crisp up and retaining the flavor of the spices.

  • Cornstarch: This is the secret ingredient! Tossing your potatoes with a little cornstarch gives the exterior something extra to cling to, resulting in a phenomenal crunch.

  • Spices: Salt, black pepper, paprika, onion powder, and garlic powder.

  • Fresh Rosemary: For that earthy, pungent, and savory flavor.

  • Garnishes: Fresh parsley and grated Parmesan cheese.

Pro-Tip: Why You Should Skip the Fresh Garlic

You might be tempted to mince up some fresh garlic cloves, but step away from the garlic press! When you roast potatoes at a high temperature, fresh garlic easily burns, leaving a harsh and bitter taste. Using garlic powder ensures you get all that sweet, savory garlic flavor without the risk of ruining the dish.

How to Make Them (Step-by-Step)

1. Prep Your Potatoes Wash your small new potatoes and quarter them. Cutting them into smaller pieces gives them the perfect surface-area-to-volume ratio—meaning more crispy edges and just enough soft, creamy interior.

2. Season and Shake Place your potatoes into a bowl (or a container with a tight-fitting lid). Pour in your olive oil, cornstarch, salt, pepper, paprika, onion powder, garlic powder, and freshly chopped rosemary. Toss everything vigorously until the cornstarch is completely dissolved into the oil and every single potato is evenly coated with flavor.

3. Roast on High Heat Spread the potatoes out in a single, even layer on a parchment-lined baking sheet. Here is another secret: if your oven has a convection setting, use it! The convection fan circulates hot air around the potatoes, essentially turning your oven into a giant air fryer and giving you the best crispy edges imaginable.

4. Garnish and Serve Once they are golden brown and crispy, pull them out of the oven. While they are still piping hot, dress them up! Sprinkle some freshly chopped parsley over the top for a pop of bright green color. Finally, hit them with a generous dusting of fresh Parmesan cheese. The residual heat from the potatoes will gently melt the cheese, creating a savory, salty crust that is absolutely mouthwatering.

The Perfect Side Dish for Any Occasion

Whether you are serving a glazed ham for Easter, grilling steaks on a summer evening, or just throwing together a quick chicken dinner on a Tuesday, these Garlic and Rosemary Roasted Potatoes are guaranteed to be a crowd-pleaser. They are simple, show-stopping, and highly addictive.

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