Preheat oven to 425 degrees. Cover a large baking sheet with parchment paper or spray with nonstick spray.
In a small bowl, whisk the soy sauce or tamari, agave, sesame oil, rice vinegar and Sriracha. Set aside.
In a bowl, toss the carrots, garlic and 1 tablespoon olive oil. Place on the baking sheet and evenly distribute. Place in the oven and bake for 15 minutes.
While the carrots are roasting, toss the broccoli and remaining 1 tablespoon of olive oil in a bowl. Once the carrots have roasted for 15 minutes, remove from the oven. Add the broccoli to the baking sheet. Toss the carrots and broccoli and maker sure they are in a single layer. Place back in the oven and continue to bake for 10 -15 minutes.
Remove the carrots and broccoli from the oven. Place them in a serving bowl and add the soy sauce mixture. Toss to fully coat the vegetables. Sprinkle sesame seeds over the top. Enjoy!