Slice the sun dried tomatoes and prepare any optional garnishes.
Add avocados to a mixing bowl.
Add lemon juice, salt, and black pepper.
Mash with a fork until combined while leaving some texture.
Taste and adjust seasoning if needed.
Heat a medium skillet over medium heat.
Add olive oil and butter.
Allow the butter to melt completely and swirl to combine.
Place the sourdough bread into the skillet.
Toast for 2 to 3 minutes per side until golden brown with a crispy exterior and buttery edges.
Remove from the skillet.
Spread the avocado mixture generously over the warm toast.
Use the back of a spoon to create texture.
Arrange the sun dried tomatoes evenly over the avocado.
Finish with fresh cracked black pepper and flaky salt.
Add red pepper flakes and microgreens if desired.
Drizzle lightly with extra virgin olive oil.
Serve immediately.