Dice onion and mince garlic. Heat a large skillet over medium and add 1-2 teaspoons olive oil.
Sauté onions and garlic for 2-3 minutes. Add beef, salt and pepper; stir to crumble. Cook for 6-8 minutes or until beef is no longer pink. Stir in salsa verde and cumin.
Warm up taco shells as directed on package. Chop tomato.
Add beef mixture to each shell; top with spinach and tomatoes. Serve with strawberries on the side.