Preheat Oven: Heat the oven to 425°F so it’s ready to roast the shrimp fast without drying them out. Line a rimmed baking sheet with foil for easy cleanup.
Coat the Shrimp: Add the shrimp to a gallon zip-top bag. Pour in the barbecue glaze and sprinkle in the blackening seasoning, then seal and toss the bag around until the shrimp are evenly coated.
Roast the Shrimp: Spread the shrimp in a single layer on the prepared baking sheet. Bake for 6–8 minutes, until pink and cooked through. Remove from the oven and keep warm while you prep the rest.
Slice the Oranges: Cut the oranges into thick rounds, about ¼-inch thick, and lay the slices on a foil-lined baking sheet. If your shrimp sheet is messy, use fresh foil or a second sheet.
Warm the Oranges: Sprinkle the orange slices with cinnamon sugar. Bake at 425°F for 4–6 minutes, just until warmed and glossy-looking, then remove from the oven.
Build the Salad: Add the mixed greens to a large bowl. Sprinkle in the dried cranberries and cinnamon-toasted almonds, then add the crumbled blue cheese.
Dress the Greens: Drizzle the vidalia onion dressing over the salad and toss gently until lightly coated. If you like a lighter salad, start with a little less and add more as needed.
Assemble and Serve: Divide the salad among plates. Top each serving with warm orange slices and the roasted blackened-barbecue shrimp.
Blend the Orange Dream Shakes: Add the orange juice and orange blossom honey to a blender, then add the ice cubes and vanilla ice cream. Blend until smooth and creamy, about 30–45 seconds.
Pour and Sip: Pour into glasses and serve right away while it’s thick, frosty, and pretending it isn’t basically dessert.