Serves: 4Prep Time: 15 minutesCook Time: 20 minutesTotal Time: 35 minutes Ingredients Venison – 1½ lb venison backstrap or tenderloin– 1 tablespoon olive oil– 1 tablespoon butter– 1 teaspoon kosher salt– ½ teaspoon black pepper– ½ teaspoon crushed dried rosemary– ½ teaspoon garlic powder Mango-Blackberry Reduction – ¾ cup ripe mango purée– ½ cup fresh…