Glee Chessic Sense
1.d4 Nf6
2. c4 e6
3. Nc3 Bb4
4. a3
(if 4. … Bxc3+ 5. bxc3)
Thanks to Chessic Sense for conditionals (which speed the game up) and to Mosier for his helpful diagrams. 
This opening for Black is the Nimzo-Indian defence (named after Grandmaster Nimzovich) and I am playing the Saemisch variation.
White gets the two bishops and a pawn majority in the centre. However this comes with doubled pawns, giving an interesting, unbalanced* game.
I have played this a lot as Black, so it should be fun to try the White side of things.
*unbalanced in rhe sense of ‘not likely to end in a draw’, rather than crazy!