In a large skillet, saute the onion and garlic in olive oil until the onions are translucent. Drain the cans of minced clams, reserving half of the juice.
Stir the clams, reserved juice, butter, salt and pepper, and wine. Simmer the mixture for 20 minutes, until the sauce has reduced 1/3 and has thickened.
Remove the spaghetti squash from the warming bowl/oven and plate. Spoon the clam sauce over the linguini and serve with organic sourdough bread.