Shrimp and Tofu in Herb Garlic Butter

1 lb medium size shrimp
tofu, cut lengthwise
herb garlic butter
onion, chopped
lemon
salt, pepper

1. Shell the shrimp and allow to sit in the lemon, salt and pepper
2. Melt the herb garlic butter, onion and tofu in the slow cooker
3. Toss the shrimp into the slow cooker and allow to cook