Combine ingredients: In a large bowl, combine the spinach, artichoke hearts, cream cheese, sour cream, Parmesan cheese, flour, garlic powder, onion powder, salt, and pepper. Stir until well combined.

Transfer to a baking dish: Transfer the mixture to a greased 2-quart baking dish.

Bake: Bake in a preheated 350°F (175°C) oven for 20-25 minutes, or until bubbly and golden brown.

Serve: Serve hot with your favorite chips or crackers.

Tips:

For a spicier dip, add a pinch of red pepper flakes or a dash of hot sauce.

To make this dip ahead of time, prepare it up to a day in advance and refrigerate. Bake when ready to serve.

For a healthier option, use low-fat cream cheese and sour cream.