Name: Brussels Sprouts Tartine
Prep time: 10 min
Cook time: 35 min
Total time: 45 min
Yield: 4
Ingredients: 1 sweet onion, (thinly sliced); 1 garlic clove, (minced); 1 tablespoon unsalted butter; ½ pound brussels sprouts, (stems removed and sliced); 1 tablespoon olive oil; kosher salt; freshly cracked black pepper; 4 slices sourdough bread,; 6 ounces havarti cheese, (freshly grated); 1 lemon, (thinly sliced); frehsly grated parmesan cheese, (for sprinkling)