Lasagna-style Baked Ziti

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Details

11 Ingredients

• 12 ozs ziti (about 4 cups)
• 1 Tbsp olive oil
• 1 large onion, chopped
• 2 cloves garlic, finely chopped
• 1/2 lb lean ground beef
• kosher salt and black pepper
• 1 26-oz jar marinara sauce
• 1 bunch spinach, thick stems removed (about 4 cups)
• 1/2 cup ricotta
• 1/2 cup grated Parmesan (2 ozs)
• 1 cup grated mozzarella (4 ozs)