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.
Add chopped and crumbled sirloin. Add salt and pepper, dividing the beef into small bites. Continue cooking until beef is no longer pink, drain off excess fat.
Add the jar of pasta sauce and reheat.
While the meat sauce cooks, add the softened cream cheese, sour cream and cottage cheese to a medium mixing bowl.
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