Heat a skillet over medium heat, melt butter and add onion. cook until tender, about 5 minutes. Add garlic and cook for 1 more minute. Add flour and whisk for about a minute. Slowly add warmed half-and-half a little at a time whisking until it is smooth before adding more cream. Once all has been added, bring to a boil and then turn down to low, whisking until it thickens. Add cheese a handful at a time.

Add cilantro, jalapeno, cumin, cayenne and salt to taste.

Slice rolls in half horizontally and place under broiler for 30 seconds until slightly toasted. Place toasted rolls in a baking dish and place turkey slices on each roll. Pour cheese sauce over the top and sprinkle with chopped bacon. Place back under the broiler until the sauce starts to bubble and the tops turn slightly brown. Serve with guacamole.