01 - Preheat oven to 400°F. Line baking sheet with parchment paper.
02 - Toss butternut squash cubes, chopped onion, and garlic cloves with 1 tablespoon olive oil and a pinch of salt. Spread evenly on baking sheet.
03 - Roast for 25 to 30 minutes until squash is tender and beginning to caramelize.
04 - Boil elbow macaroni according to package instructions until al dente. Drain and set aside.
05 - Combine roasted vegetables, soy or oat milk, nutritional yeast, lemon juice, Dijon mustard, turmeric, smoked paprika, salt, and black pepper in blender. Blend until smooth and creamy. Adjust seasoning as needed.
06 - Heat 1 tablespoon olive oil in large pot over medium heat. Pour in blended sauce and cook for 2 to 3 minutes, stirring frequently until warmed through.
07 - Add cooked pasta to sauce and stir to coat evenly.
08 - Preheat broiler. Toss panko breadcrumbs with 1 tablespoon olive oil and sprinkle over mac and cheese. Broil for 2 to 3 minutes until golden brown.
09 - Serve immediately, garnished with additional black pepper or fresh herbs if desired.