The fix: Cook seafood separately (pan-sear, grill, or poach) and add it to your dish at the very end. Or use a pressure cooker or stovetop for seafood-based meals.
The only exception: Firm fish like cod or halibut can sit in a slow cooker for the last 30 minutes—but watch it closely.
7. Canned Beans (Added Too Early)
Canned beans are already cooked. They don’t need hours in a slow cooker.
What happens: Canned beans break down into mush. They lose their shape and texture, turning your chili or stew into a thick, pasty bean dip.
The fix: Add canned beans during the last 30 minutes of cooking—just enough time to warm through and absorb flavors.
The exception: Dried beans (soaked overnight) are great in slow cookers. They need the long cooking time to become tender.
