Cook the Ditalini Pasta:
Bring a large pot of salted water to a boil.
Add the ditalini pasta and cook according to the package instructions until al dente.
About 3 minutes before the pasta is done, add the broccoli florets to the boiling water with the pasta.
Drain the pasta and broccoli together, reserving about 1 cup of the pasta cooking water.
Prepare the Cheese Sauce:
In a large skillet over medium heat, melt the butter.
Add the minced garlic and sauté until fragrant, about 1 minute.
Pour in the heavy cream and bring to a gentle simmer.
Gradually stir in the shredded cheddar and mozzarella cheeses until the sauce is smooth and creamy.
Season with salt and freshly ground black pepper to taste.
Combine and Serve:
Add the cooked ditalini pasta, broccoli florets, and crumbled bacon to the cheese sauce.
Toss to combine, ensuring the pasta and broccoli are evenly coated with the sauce.
If the sauce is too thick, gradually add some of the reserved pasta cooking water until you reach the desired consistency.
Serve the pasta hot, garnished with chopped fresh parsley.