Preheat oven to 425 degrees Fahrenheit and line a baking sheet with Gefen Parchment Paper.

In a large mixing bowl, combine oil, salt, pepper, mustard, and soy sauce. Add broccoli and mushrooms; stir to coat. Add 3/4 cup parmesan cheese. Stir to coat evenly.

Spread vegetables on prepared baking sheet. Sprinkle with remaining 1/4 cup parmesan cheese.

Bake for 20 to 30 minutes, until crispy.

To reheat, place in a single layer, uncovered, on a baking sheet and place in the oven until just heated through. Also delicious at room temperature!