Preheat oven to 400˚ and line a baking sheet with parchment
Wash the acorn squash, cut in half, seed it and then slice a very thin layer off the bottom so it will sit evenly on your pan
Spray the acorn with avocado oil and sprinkle with salt and pepper
Bake for 30 minutes or till fork tender
Meanwhile add beef to a skillet breaking apart and browning till longer pink
Add onion, taco sauce, drained diced tomatoes, salt and pepper
Simmer 5 minutes
Fill acorn squash with meat mixture
Place back in oven for 10 minutes
Garnish with limes and cilantro
Enjoy!