To saute frozen vegetables and keep the frozen vegetables crisp start by heating a wide pan or large pan over medium high heat.
Then add the frozen vegetables to the heated pan and add a little oil or butter.
Then stir and cook the frozen vegetables for 5 to 7 minutes.
You can then season the frozen vegetables with some spices, herbs, cheese, lemon juice, nutritional yeast, sauce or fried breadcrumbs.
To roast the frozen vegetables in the oven so they are crisp start by preheating the oven to 400 F to 450 F.
Then line a baking sheet with some parchment paper.
Next spread your frozen vegetables out in a single layer on your baking sheet.
Then roast the frozen vegetables in the oven for 25 to 30 minutes.
After 25 to 30 minutes in the oven you then remove the vegetables from the oven and then add some oil and seasonings.
Then place the vegetables back into the oven and roast them for another 8 to 10 minutes or until they are crispy.
You can also use some cornstarch to help make your frozen vegetables crispy.
And avoid thawing the frozen vegetables before cooking as the high heat of the oven will also help to crisp the frozen vegetables up.
The frozen vegetables are safe to eat once they reach a minimum internal cooking temperature of 135 F.