Four-Cheese Grilled Cheese Sandwich

Ingredients (11)

• + 2 tablespoons salted butter, softened add to pantry
• + 1 teaspoon minced garlic add to pantry
• + 2 thick slices Italian bread add to pantry
• + 1 ½ tablespoons olive oil, divided, or more as needed add to pantry
• + 2 cups chopped fresh spinach add to pantry
• + ½ cup giardiniera, drained add to pantry
• ✓ 2 slices mozzarella cheese
• + 2 slices provolone cheese add to pantry
• + 2 slices Asiago cheese add to pantry
• + 2 slices Fontina cheese add to pantry
• + 3 slices Roma tomato, cut lengthwise, or more to taste add to pantry