Vegan Mushroom Tea Sandwiches

Heat oil in a large skillet over medium-high. Add mushrooms and a pinch of salt. Cook, stirring occasionally, until tender and beginning to brown. Add 1 teaspoon lemon juice, then remove mushrooms from heat. Let cool completely.

Stir together mayonnaise, wasabi, and remaining 1 teaspoon lemon juice. Season lightly with salt and pepper. Fold in mushrooms and chives.

Spread 3 tablespoons mushroom mixture each on four bread slices. Top with arugula, then sandwich with remaining bread slices. Using a sharp knife, cut off crusts, then cut sandwiches into triangles or fingers; serve.