Mix first three ingredients and spread 1/3 of mixture in the bottom
of an 11 x 7-inch microwave baking dish. Layer 2 corn tortillas
Combine next four ingredients with 1/4 cup of each shredded
cheese and spoon 1/2 of mixture over tortillas. Repeat layers, ending
with salsa mixture. Cover with plastic wrap and microwave on HIGH
for 10 to 12 minutes, rotating the dish during cooking.
Remove wrap; sprinkle with remaining cheese. Let stand until cheese melts.