Pre-heat oven to 375.
In a saute pan, heat olive oil. Add onions, carrots, and celery. Cook until onions are translucent, about 4 minutes. Add garlic, sauté 1 minute more. Toss mixture into a large bowl and let cool.
In the meantime, using a separate bowl, mix ketchup, sour cream and egg. Throw in with veggies. Add turkey, chorizo, breadcrumbs, salt & pepper. Mix well.
Cover a baking sheet with aluminum foil; this technique will save tons of clean up time. Pour turkey mixture onto sheet and shape into a loaf. Think of the size of an average bread pan. It doesn't have to be perfect.
Throw the turkey loaf in the oven. Cook for 45-55 minutes, until the meat, registers 160 or turkey 180 on a meat thermometer. In my oven, 45 minutes does the trick.
For the sauce, heat a sauté pan to high. Add tomatoes, onion, garlic, and Serrano. Char everything. That means, get a good burn on the skins, don't be shy. (If you're using cranberries, have them waiting in the blender while you char everything else.)
Add charred ingredients to blender. Add Chipotle pepper and sugar. Blend until smooth.
Return to pan. Add mustard. Simmer 10 minutes, until sugar has dissolved. Season with salt. Serve over meatloaf.
I like to serve this with a potato (roasted or mashed) and a green (green beans or kale chips). So, so good!