how long do i cook spaghetti squash in the oven
1 (BAKE IT). 2  Pierce the whole shell several times with a large fork or skewer and place in baking dish. 3  Cook squash in preheated 375Â°F oven approximately 1 to 1-1/2 hours or until flesh is tender, It took about 1 1/2 hours for mine to tender up. *****.( 4 BOIL IT). Place squash cut sides up in a microwave dish with 1/4 cup water. 2  Cover with plastic wrap and cook on high for 10 to 12 minutes, depending on size of squash. 3  Add more cooking time if necessary. 4  Let stand covered, for 5 minutes. 5  With fork comb out the strands.