Description
This cozy-meets-fancy tartine is everything you want in a bite: rich, savory, cheesy, and just the right amount of messy. Caramelized onions and charred Brussels sprouts pile high on toasted bread, with nutty Gruyère bubbling over the edges. Serve them for brunch, apps, or dinner—you won’t want to stop at one.
Ingredients
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1 tbsp olive oil
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1 tbsp butter
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2 yellow onions, thinly sliced
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½ tsp salt + ¼ tsp sugar
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2 cups shaved Brussels sprouts
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¼ tsp black pepper
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4–6 slices rustic bread
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1 cup shredded Gruyère or fontina
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Optional: balsamic glaze or grainy mustard
Instructions
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Caramelize Onions: Heat oil + butter on medium-low. Add onions, salt, and sugar. Cover for 10 mins, then uncover and stir often for 15 mins until golden.
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Sauté Sprouts: In another pan, heat oil. Cook sprouts with salt + pepper over medium-high, flipping occasionally, 6–8 mins until edges are crisp.
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Toast Bread: Toast bread slices lightly. Preheat broiler.
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Assemble: Layer bread with onions → sprouts → cheese.
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Broil 2–3 mins: Until cheese is melty and browned. Watch closely!
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Finish: Drizzle with balsamic glaze or mustard if using. Serve immediately.
Notes
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Add bacon or pancetta between onions and sprouts for extra savoriness.
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Make vegan: Use dairy-free cheese and butter.
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Change it up: Try mushrooms or kale instead of sprouts.
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Mini bites: Use baguette slices for party-friendly appetizers.
- Prep Time: 15 mins
- Cook Time: 30 mins
Nutrition
- Calories: 310 cal Per tartine
- Fat: 17g
- Carbohydrates: 26g
- Fiber: 4g
- Protein: 12g