Onion And Anchovy Tartlets

Name: Onion And Anchovy Tartlets
Prep time: 30 min
Cook time: 30 min
Total time: 30 min
Yield: 1
Cuisine: Global
Ingredients: 1 serving anchovy fillets, drained; 20 gs butter; 1 serving fresh thyme, for garnish; 25 gs gruyere cheese, grated; 1 Tbsp olive oil; 1 x red onion, sliced finely; 1 serving salt and freshly ground pepper; 3 x shallots, sliced finely