Using a hand blender or immersion blender, blend 3 ingredients until blended.
Bring water to a boil, add salt and pasta and cook according to instructions.
Use 2 cups butter and grease a 9 x 12 pan.
Dice the green pepper and onion.
Slice the mushrooms.
Heat 2 cups garlic oil and sauté peppers, onions and mushrooms over medium heat for 3-4 minutes.
Drain pasta and set aside.
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