Remember This Seasoning Tip For The Crispiest Frozen Vegetables - Tasting Table
Briefly

Firstly, it's essential to avoid overcrowding the baking sheet. A crowded pan can cause the vegetables to steam rather than roast, resulting in a less crispy texture. Stick to one well-spaced layer for optimal results.
Parchment paper is a must to prevent the tastiest bits from being left behind. Line the pan right before roasting to avoid burnt parchment. Adjust cooking times based on vegetable size.
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