Prepare the Oven:
Preheat oven to 425°F. Line two baking sheets with parchment paper.
Roast the Brussels Sprouts:
Place halved Brussels sprouts on the first baking sheet. Drizzle with 1 tablespoon olive oil, adobo sauce, and maple syrup. Toss to coat evenly. Sprinkle with 1/2 teaspoon kosher salt. Spread in a single layer with space between pieces.
Roast the Butternut Squash:
Place cubed butternut squash on the second baking sheet. Drizzle with 1 tablespoon olive oil. Sprinkle with smoked paprika, garlic powder, and 1/2 teaspoon kosher salt. Toss to coat. Spread in a single layer.
Roast the Vegetables:
Place both baking sheets in the oven. Roast for 12-13 minutes, then stir vegetables. Continue roasting for an additional 12-13 minutes (25 minutes total) until Brussels sprouts are crispy-edged and butternut squash is fork-tender with caramelized spots.
Cook the Quinoa:
While vegetables roast, rinse quinoa in a fine-mesh strainer under cold water. Combine rinsed quinoa and broth in a small saucepan. Bring to a boil over medium-high heat (3-4 minutes).
Once boiling, reduce heat to low and cover with a tight-fitting lid. Simmer for 15 minutes without stirring. Remove from heat when quinoa is fluffy and all liquid is absorbed.
Add the Kale:
Immediately stir chopped kale into the hot quinoa. Let sit for 1 minute, stirring gently until kale wilts and turns bright green.
Make the Dressing:
In a small bowl, whisk together olive oil, apple cider vinegar, honey, Dijon mustard, and salt until emulsified and creamy. Taste and adjust seasoning as needed.
Assemble the Bowls:
Divide quinoa-kale mixture among four bowls. Top each bowl with roasted Brussels sprouts and butternut squash. Drizzle 2-3 tablespoons of honey-Dijon dressing over each bowl.
Add optional toppings as desired: sliced avocado, toasted nuts or seeds, fresh herbs, or nutritional yeast.