Snap Peas and Green Beans with Arugula-Mint Pesto

Preheat oven to 350 °F. Toast almonds on a rimmed baking sheet, tossing once, until fragrant and slightly darkened in color, 8 –10 minutes. Let cool, then coarsely chop half of almonds and set aside. Pulse remaining almonds with garlic, arugula, half of Parmesan, and 1 cup mint in a food processor to a smooth paste. With motor running, stream in oil; thin with 2 tablespoons cold water to reach a pourable consistency. Season pesto with salt and pepper. Cook peas and beans in a large pot of boiling salted water, stirring occasionally, until crisp-tender, about 3 minutes. Drain; transfer to a bowl of ice water and chill until cold. Drain peas and beans; pat dry with paper towels. Transfer to a large bowl and toss with lemon juice and 3 tablespoons pesto; season with salt and pepper. Arrange peas and beans in a large bowl or platter over remaining pesto. Top with more mint leaves, reserved almonds, and remaining Parmesan; season with salt and pepper. Serve with lemon wedges for squeezing over.