Here is our walkthrough strategy for Angry Birds Seasons Ragnahog Level 1-2. You can read more about the Ragnahog update and find helpful links here.
Send the Boomerang over the top, activating to come back to the gap above the stove, setting it off and destroying the structure. A one bird clear is very possible but clean up with Stella if necessary. In the video, even though we killed all the pigs, Cousin Tony remained caged so we used Stella to set him free. His bonus points offset using Stella, and we got the extra collateral points too!