Cook the noodles per the instructions on the package. Strain the water and set aside.
Preheat the oven to 400°F.
Melt the butter, minced garlic, onion powder, thyme, and parsley in a small pot over the stovetop.
In a 9x13-inch baking dish, add the broccoli, spinach, and noodles.
Pour the melted herb butter over the top.
Add the nutritional yeast and zest and juice of the lemons. You can use 1 to 2 lemons, depending on size or how zesty you want it. Mix it all up together.
Bake for 10 to 15 minutes or until the broccoli is cooked to your liking.
Add salt and pepper before serving.
Store leftovers in an airtight container in the fridge for up to a week.