Sauté garlic in 2 Tbsp olive oil about 30 seconds on medium heat. Add jar of salsa and bring to simmer. Add in can on refried beans a dollop at a time. (I used wire whisk to whisk in). Add hot sauce to taste. If too thick at this point add a little bit of water. I actually put some in the same jar as the salsa and got the extras out. Simmer 10 minutes.
Add 4 oz of the cream cheese in dollops (again using wire whisk to blend in). Once the cream cheese is blended, add the cup of sour cream and stir. Sauce will be thick and creamy. I added a dash of cumin and chili powder--your preference on the spices.
Spray casserole dish and add in pasta. Stir in sauce mixture until blended. Top with dollops of remaining cream cheese. Sprinkle with shredded cheese and top with jalapeño slices.