Shrimp-Avocado Club Sandwiches

Mayonnaise or salad dressing
12 slices white bread, toasted
4 lettuce leaves
12 slices tomatoes
12 slices bacon, crisply cooked
2 (4 1/4 ounce) cans large shrimp, rinsed and drained
1 large avocado, peeled, thinly sliced

Spread mayonnaise or salad dressing over one side of each slice toast. Place lettuce leaf, 3 slices tomato and 3 slices bacon on each of 4 slices toast. Top with another slice toast. Arrange shrimp on top; arrange avocado slices on shrimp. Top with third slice toast; secure with wooden picks. Cut sandwiches diagonally into 2 or 4 triangles.