Preheat oven to 400 and line a baking sheet with parchment paper.
Add the cauliflower to a large bowl and toss with avocado oil and GF flour.
Add to the baking sheet with seasonal veggies and bake for 20-25 minutes, until cauliflower is tender-crisp but not soggy.
Meanwhile, whisk together the sweet and sour sauce by adding all ingredients to a small bowl and mixing with a fork.
Once the cauliflower is done baking, remove from the oven and toss with the sauce to lightly coat.
To assemble, divide jasmine rice and cauliflower/veggie mixture between meal prep containers and top with diced scallions.
Store in the fridge for 4-5 days.