INGREDIENTS
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1 tablespoon olive oil
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1 cup chopped onion
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4 garlic cloves, minced
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6 ounces lean ground sirloin
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1/4 teaspoon kosher salt
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1/4 teaspoon crushed red pepper
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1/4 teaspoon black pepper
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1 1/2 cups lower-sodium marinara sauce (such as McCutcheon's)
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2 ounces pitted kalamata olives, coarsely chopped
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1 1/2 pounds cauliflower, cut into florets
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Cooking spray
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1 ounce French bread baguette, torn into 1-inch pieces
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1/4 cup (1 ounce) grated fresh pecorino Romano cheese