Cream Sauce: Mix ingredients until well blended. Cover. Refrigerate until ready to use.
RITZ Crumble: Combine ingredients. Store in airtight container at room temperature until ready to use.
Breakfast Pizza: Place flatbread on parchment paper-lined sheet pan. Brush with butter and sprinkle with 1-1/4 oz. RITZ Crumble. Drizzle with 2.5 oz. Cream Sauce. Top with remaining ingredients.
Bake in 400°F convection oven 8 to 10 min. or until cheese is melted and golden brown. (Egg yolk should be runny.) Cut into quarters.