Step 1
Prepare rice according to package directions, chill immediately.
Step 2
Meanwhile, in a food processor, combine mint, almonds, garlic, Parmesan cheese, kosher salt and lemon juice. While processing, slowly drizzle in 4 tablespoons olive oil until pesto is smooth, but not pureed.
Step 3
Preheat a grill and coat asparagus spears and mushrooms with remaining 2 tablespoons olive oil. Grill asparagus and mushrooms for 2 minutes each side, remove and reserve.
Step 4
Combine chilled rice with pesto until well blended, gently fold in asparagus, mushrooms and tomatoes.