Challenging Crossword

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Across
  1. 2. Oreo alternative
  2. 4. Black; noire
  3. 7. Fertile
  4. 8. Choke
  5. 9. Hairy monster
  6. 11. Covered in cinders
  7. 12. Light on fire
Down
  1. 1. Seriously bad
  2. 2. A feeling
  3. 3. Black rock
  4. 5. Valley
  5. 6. The last month of spring
  6. 10. Malignant
  7. 11. Great amazement