Hot Crab Dip

blocks of Philadelphia cream cheese , softened to room temperature

mayonnaise

grated onion

kosher salt , or to taste

freshly cracked black pepper , or to taste

garlic powder , or to taste

Old Bay seasoning , or to taste

Cajun seasoning (like Slap Ya Mama ), or to taste, optional

Worcestershire sauce , optional

heavy cream , more or less

artichoke hearts , drained well and quartered, optional

crabmeat , drained