Print Ingredients 1 ea. Red kidney beans, canned 1 tsp. Liquid smoke 1 Tbsp. BBQ spice rub As needed Salt 1 Tbsp. Sugar As needed Olive oil spray Directions Preheat the oven to 350°F Rinse and drain the kidney beans. Place in a bowl and toss with the liquid smoke, BBQ spice rub, salt, and sugar. Place the kidney beans on a parchment lined cookie sheet and spray with olive oil. Roast for 30 to 40 minutes in the oven until very crispy. If they are still soft inside, continue to roast in 5 minute increments, until perfectly crispy. They will crisp up even more as they cool. When they are done, allow to cool, and keep in an airtight container. Note: These make an excellent alternative grain-free crouton, bowl topper or snack.