Use chopped frozen onion, measured directly from the package, in place of freshly chopped onion. Or, try instant dried or powdered onion; 2 tablespoons of dried minced onion or 1 tablespoon onion powder equals ½ cup of chopped onion.
Rinse canned beans well to remove any starchy liquid and excess salt. Drain the rinsed beans thoroughly.
For more summer barbecue spirit, add 1/2 cup of dark beer to the beans before cooking.