Cook pasta according to package instructions, drain and set aside
Season shrimp and sear on medium high heat with a little olive oil in a non stick pan
Sear on both sides for 2 minutes per side or until golden brown and blackened slightly
Remove shrimp and add onion, garlic and sun-dried tomatoes and more olive oil if needed
Saute until fragrant about 2 minutes and then add heavy cream
Bring heavy cream to a simmer on medium heat then add Parmesan cheese
Season to taste with more cajun seasoning and salt if desired
Add cooked pasta and broccoli and toss well until combined
Top with shreded white cheese and broil in the oven for 2 minutes or until golden brown and bubbly
Top with cooked shrimp and broil 1 more minute to bring shrimp to temperature
Top with lemon juice and fresh parsley to taste