Preheat the oven to 425 degrees and line a baking sheet with parchment paper.
Add the cauliflower, onion, oil and dry seasonings to the baking sheet and toss to coat. Spread in an even layer and place in the oven for 20 minutes.
Remove from the oven, toss the veggies and add the sausage slices to the baking sheet. Place back in the oven for 15-20 minutes, or until the sausage and veggies are charred.
Meanwhile, combine the mayo and pesto in a bowl. Set aside.
To assemble, add spinach & rice to each bowl. Top with the sausage, veggies & a dollop of pesto mayo. Sprinkle with fresh basil and enjoy!
Video
Notes
The nutrition info does not include the optional ingredients.
For a lighter meal you can omit the mayo and just serve this with traditional pesto.