Form the burgers
Add the pork and veal, grated onion and ancho powder. Mix together.Season with salt and pepper. Form into 4 quarter-pound patties.Cover and chill in the fridge
Make the apple chips
Preheat the oven Slice the apples and arrange in a single layer on a parchment paper-lined baking sheet. Sprinkle with a hint of salt. Place in oven and bake until the chips are crispy.
Remove from oven When cool, scoop out the soft inner flesh and put into a clean food processor with the mayo, garlic, and a dash of coarse ground black pepper. Pulse to combine. Scrape sides and make sure everything is mixed well.
Heat a heavy cast iron pan Add butter to the pan. Place the burgers in and cook until the bottoms have gotten a good crisp. Rest the patties while you toast the buns and prep.
Cook the burgers:
Place the greens evenly over the bottom buns. Add the patties on top and arrange apple chips over each. Slather the roasted squash aioli over the tops of the buns and secure them on top with a toothpick to serve.
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