• Before starting, remove 3 tbsp (6 tbsp) butter from the fridge and set aside to come up to room temperature.
• Preheat the oven to 450°F.
• Wash and dry all produce. 
• Bring a large pot of salted water to a boil over high.
• Heat a large non-stick pan over medium-high. When the pan is hot, add 1/2 tbsp (1 tbsp) oil, then sausage. Cook for 4-5 min, breaking up sausage into smaller pieces, until no pink remains.** Season with salt and pepper.
• While sausage cooks, peel, then mince or grate garlic.

• To the boiling water, add spaghetti. Cook for 12-13 min, until tender but still firm to the bite.
• Reserve 1/4 cup (1/2 cup) pasta water.
• Strain spaghetti, then return to the pot, off heat.

• Meanwhile, to the pan with sausage, add mirepoix, half the garlic and 1 tbsp (2 tbsp) butter. Cook for 2-3 min, stirring often, until mirepoix softens slightly.

• To the pan, add crushed tomatoes, cream, broth concentrate and half the balsamic glaze (use all for 4 servings). Season with salt and pepper. Bring to a boil over high.
• Once boiling, reduce heat to medium-low. Cook for 4-6 min, stirring occasionally, until sauce thickens slightly. Remove the pan from heat. Add 1 tbsp (2 tbsp) butter and spinach. Stir for 1-2 min, until spinach wilts.

• Meanwhile, in a small bowl, combine remaining garlic and 1 tbsp (2 tbsp) butter. Season with salt. (NOTE: This is your garlic butter.)
• Halve ciabatta.
• On an unlined baking sheet, arrange ciabatta, cut-side up. Spread garlic butter over rolls. Sprinkle Parmesan on top.
• Bake in the middle of the oven for 2-3 min, until Parmesan melts. (TIP: Keep an eye on them so they don't burn!)

• To the pot with spaghetti, add sauce, then toss to combine. (TIP: For a lighter sauce consistency, add reserved pasta water, 1-2 tbsp at a time.)
• Divide spaghetti between bowls.
• Serve cheesy garlic toasts alongside.

If you've opted to get sausage, add 1/2 tbsp (1 tbsp) oil to the pan, then add sausage. Cook sausage in the same way the recipe instructs you to cook the chicken.**