Removing the moisture from the canned asparagus is key for a crispy result. Before cooking, it's important to drain, rinse, and pat dry the spears before they hit the heat.
One of the quickest ways to crisp up canned asparagus is in a hot skillet. Simply heat up butter or oil in a pan over medium heat and wait until it becomes crisp.
You can also try the grill or a stovetop grill for cooking canned asparagus with appetizing char marks; it only takes a couple of minutes on each side.
Another option is to bake them in a single layer on a baking sheet in the oven at high heat. You can also put them in the air fryer for a few minutes to crisp them up.